As per title a pair of 997 gen2 back boxes in great condition complete with a 1.75" gundo hack. IMO 1.75" is the best sound for this mod. The advantage of buying these are you get to retain the original unmodified boxes for future refit at sale time or for warranty purposes or just for you to sell. Looking for £450 delivered to mainland Uk. Pm me if anyone is interested. :thumb: