I already bought all new gaskets for the motor on the advice of another member. So I will be changing all of them.

So if I put my blower and TB on I should be good with my current PCM on my '99?

I hope that all the gaskets are the same from the '97 to the '99. Do you know if they are?

Head gaskets
TB
LIM
supercharger gasket
VC's
Water pump
Timing chain cover
Rear main oil seal
exhaust manifolds