Which 20vt motor is best??

[TM]

Marc brought up a very good point that I forgot- of course you can
change IMs! Oops.

The AAN is definitely a better engine in terms of the ignition system-
w/ financial considerations aside, I'd go w/ AAN and RS2 manifolds-
EM and IM. That would fix your plumbing issues. RS2 parts for the turbo
plumbing and intercooler would also be ideal, esp. since they are all
bolt-on for the type 89.

Taka