I can see what I can dig up and I am not sure I can find the specific Martini car the kit is supposed to represent. I am however pretty sure all the 935s had a flipped trans. I also believe in flipping the trans in a real 911 it can be done without extensive tunnel mods. It might not be worth doing on the kit but it would be kind of cool and unique because it would be different then all those other ones out there, not that you would see it really.