i have a south african citigolf, it came with 100mm inner cv's, does this narrow down the options for the outer ones. got a noisy one and want to replace outer joints and all the boots. does anyone no where to get them from. i also need a clutch kit, would it be 210mm ,motor came from a aussie mk2 gti. while i'm here ,does anyone know where the compression changes in 1800 engines is made. is it the cylinder head chamber size or the piston shape. i think ive given up some power with this engine change. it seems to run well, but doesn't have the same snap when opening the secondary's . any way hope someone can help. cheers