engne vin?
if you used the stock pcm youd be able to contribute data on the converter flash stall and calculated ratio.
we had that aurora converter flash stall to nearly 4k one time at the 1-2 before the mph pid made it clear we had started spinning once we shifted lol
you have the damn trans fer it, modify the range switch or install the later IMS switch/harness and use the inverter or the TEP bin fix.
that data is gonna help you aloooot