I have time to pass so as no one else has responded to your latest request I will give it a go..
If you are buying into the idea of a Porsche as an INVESTMENT, then good luck with that.
A sports car that is circa 40 years old is just bound to have stories to tell and they are unlikely to match those you have adopted in your mindset unless you are entirely immune to MARKET hype, and few of us really are, to some degree at least..? Salesmen are trained to assess YOU better than the car he/she is trying to sell you, and if you are a sucker for sales patter they will know all the trigger points to feed you..?
I have expressed opinion on this SC before but I can not remember where cause I`m an old duffer and less than knowledgeable in the use of technology...
Whether this is an SC SPORT or just an SC with sport additions will affect it`s perceived value.
Non sports as were mine had Cookie Cutter wheels of 15" (?) diameter and thus used higher profile tyres to provide the same rolling radius as the 16" FUCHS wheels used on the SPORT with lower profile tyres.. The effect of which on the sport equated to the sharper steering response and stiffer ride, though at the time I made these assessments the cars were circa 10 years old...
The SC sport used Bilstine (sp?) shockers and the non sport used Boge, I was more than happy with the more comfortable ride in my non sport SC than that which I experienced in the sport when travelling over rough roads, even on track days of which I attended a few.. Sure the non sport took a bit more time to set up and settle into corners as determined by tyre sidewall flex but that was never found to be a problem out on the road.... I can appreciate a bit of flexibility, more so these days (-:
Tombstone seats were never a favourite which seem to be those fitted to the SC in question. As for tartan, well each to their own sense of taste..?
I note that the rear fog guard lights are missing thus fastidious past ownership kinda goes out the window, perhaps more so as the fixing holes seem to be left to their own devices risking encouraging corrosion..?
I have it in my mind that I may have seen engine bay pics of this car, in which it may have not had an air pump in position, whether an air pump is fitted as original in the earlier SC`s or not I am unsure...? From a poor memory the air pump injected air into the exhaust port in the cyl head to assist further burning of the exhaust gasses before they exited the tail pipe, which supposedly reduced harmful emissions.. thus associated with this system there was pipework on the underside of the engine that inevitably corroded and added another measure of complexity to long term maintenance... I think some folk may have just done away with the pump and the pipework and in the process fitted blanking plugs to the former pipe entry points on each cyl head..? While the omission of this kit may be thought of as a maintenance advantage it may also affect evaluation of ORIGINALITY, and dependant on laws relative to exhaust emission measurement now or in time, may limit your usage of the SC to some degree...?
With any air cooled 911, corrosion is bound to be a potential issue, and repairs if any can come in all ranges of quality on a Porsche, loads of bodge potential that to the naked eye is close to impossible to detect. It can take real expertise to assess the reality of any old sports car and how it has been treated during it`s lifetime... I have posted a few pics of repairs to my Porsches elsewhere on this forum...
I have no real idea as to what the brown staining in the door shuts is other than perhaps the residue of glue used to replace the rubber seals found in the area, this perhaps being the case, then the task seems to have lacked a measure of care, and how that might be interpreted in terms of presentation is for those who might care to take a closer look..
The pale coloured Porsches were not favourite in my book much preferred where stronger reds, white, black, etc, etc, etc, though how that might affect the tastes of today`s market, I have no idea. As investment seems to be key, perhaps you best do a bit more research into market evaluation of body and trim colour..?
I think this car is worthy of a look if an SC is the desired option. if it is a Sport, perhaps for investment, perhaps better still... ???
Good luck in your choices. Hope I have not muddied the water..
More than happy to be corrected..by anyone.