Most TPI guys run the speed density ecm from the 91-92 TPI cars (7730). However, no stock TPI ecm can control the 4T65E/HD.
If you want to run that trans, you could go with a stand alone tranny controller. Or look into running OBD2 with the 411 ecm to control the 4T65E/HD trannyhttp://www.thirdgen.org/tec...oughts-opinions.html
[This message has been edited by fieroguru (edited 02-08-2008).]