I swapped a t56 from a 2005 GTO into my 2000 silverado 6.0. Needing to fine tune it. From what i have read I need to disable some DTC's, probably up my idle desired airflow, disable PRND, change the transmission tab to manual, update teh VSS pule per mile from 40 to 17. Is this somewhat correct or does someone else have a better list of the items needed? I have also heard to swap in a fbody tune manual tune.