10v-20v conversion?

[David M Sugerman <dsugerma@runet.edu>]

 Wondering if anyone might know what it entails to do this upgrade? If 
the 20v head even fits on the 10v engine, what else must me done? Fuel 
injection, exhaust, clutch? I could upgrade to a 90q 20v, but my car 
has served me extremely well and I'd rather keep it and make it faster, 
rather than sell it and acquire a used car I know nothing about.

Dave 89' 80q 129k (Fast once it gets rolling, but needs torque)