Not really what you are looking for, but... My car has a floater 9", believed to be a Mark Williams unit (which probably doesn't matter). The engine is 40" out. It is a former NTF chassis, so it most likely had a can and reverser in it originally. I was trying to mount a full length Ford C4, and it was at least 3" too long. The output shaft was hitting the female coupler on the axle. I believe that trans is 32" long.