What all would need to be done to a 1998 4T65E-HD (from a Regal GS W-body) during a rebuild to prepare it to drop into a 2004 H-Body (LeSabre)?
I am thinking in terms of torque converter, line fittings, valve body / PCS update, harness / controls (98 is non-IMS, 04 is IMS), and whatever else I'm overlooking.
(I have DHP PowrTuner for the gear ratio change, and I know I'd need a Bonneville SSEi passenger axle)
Thanks