Okay, my english is not the best, so what you mean is that flywheel side of the motor is back and the side where you put the alternator, belts and so on is the front?
My diffs are original, so far. This orginal motor that i fix now is only for inspection, then i have a ported and tuned zx1000r engine with a skyline diff that i will put in. But cant do it before the swedish inspection company has get me green light for two more years 🙂 We have to check those machine every two year so everything is okay, and changing the orginal engine is not okay, so stupid. 215 bhp is better in my ears than those 20-25 🙂