I second that - i finally looked at mine pulled from a 93 passat and it's a CHA as well.
looking at the gearing, what is the chance of getting a used final drive gearing from a corrado or vr6 and certan gasser passat 02a? Would be nice to drop the rpms a bit. I want to pull mine apart and redo anything that needs it before I use it, be nice to change the ring gear at that time if I can fine one that's not out of this world $$ wise.