Hey guys. I am planning on putting a 1994 impreza drive train in a 72 fiat 850 rear engine spyder. The question I have is the engine will be facing rearward so there forth reverse will be drive and drive will be reverse. Does anybody knows what grear I need to change in the trans or do I change the ring grear in the trans/diff and where can I get one. The Impreza is a front wheel drive