theres a gentleman on th STF, i cant think of his name. but his avatar is a red cal-look beetle with him standing next to it. he runs a berg 5spd, ive talked to him once and he said he loves it. see if you can find him, he'll be one to answer all your usage questions. and i think he has a 1904cc engine, but dont quote me. ill try to find him , my work is slow, so i get to play!!
ok so i found it for you, check out his site. pretty sweet.
http://www.glenn-ring.com/Beetle.html