I have a 98 venture. Bought it really cheap with locked motor. I got a 50k mile motor and trans from an 05 impala. I am confident the motor will swap with no problem, but the trans is different. OEM is a t460e and the swap is a t465e.
Would this work with an upgraded ecm and harness out of a 2000? I think that's when they went to 4t65e? right?

Thanks for the help