
i thought this was going to be a simple yes but i dunno about 20v's, you might be better asking in the mk4 bit as somone must have tried it
To fit the mk2 box in a mk1 with an 8v or 16v you just have to swap the driveshaft flanges about so maybe you'll need to do something similar

would be good if you can as this will make the swap much easier

Do you have the engine fitted yet? i considered the conversion myself but got scared off by talk of engine management/cable change boxes and custom engine mounts etc...
