I've got a 4age 16v smallport FWD with a gearbox that is on it's way out. I've found a 20v gearbox for a decent price and was wondering if they will bolt straight on to the 16v and also if the splines on the main shaft will fit properly too.
Some people say they do and some say they don't so I don't know who to believe.
Any help will be appreciated :-)