is the cam gear for a 90 coupe quattro 20v the same for the 10V I-5?

The question is:
Is it the same as the VW 16v engine?

i have the 10 valve, and the gear is the same as the 8valve 1.8l, i would like to think that it is the same size, since the gear covers are really close to the same size over the cam gear.