I have recently swapped a 99 buick park avenue ultra l67 motor/trans into my 98 GP GT used my l36 harness, spliced the wires for map sensor an got everything ready all im lacking is a pcm. My question is what pcm will be a plug an play deal for what i have.

I have also been told but not sure if its true that if i was to have my vin programmed into a l67 pcm that it will change the l67 pcm settings back to the l36 settings is this true?

Thanx for any help!