on s2 and s4 drivers and others

I have a broblem with my audi 90 20v my gearbox is too short overset I would like to know what gears you have in it GKB. and who the cresser comes in and in which gear and kmh. in my is an ALP installed. or what will you say what gear I can build it had to be the 5 longer the rest is good. please answer all and if the flange fits from the grated to the engine from s2 to 20 v. MFG audiopp b4