Just read about there being 2 different gearboxes in the manual ftos. I am going to be fully replacing mine but the actual gearboxes are hard to come by, only found the one so far that isnt trashed, does the replacement have to be the same gearbox number F5M421 or F5M422, or if im replacing it completely does it not matter? If it does is a conversion simple enough to do, or how much extra time would it take a mechanic to do?
Thanks