First off let me say I am aware of the 411 swap, and not interested in it at all. The truck is a 2000 GMC Sierra sl classic k3500. Black box ecu. I need to alter the main sa table, tire and gear ratio, as well as alter shift points, and delete any 4wd stuff, the engine and transmission are swapped into a 97 c1500, complete wiring harness swap. So when plugged in it is no longer a 97. No need for vin swap, or segment swaps. Just some basic stuff needs done on the tune, engine is 110% stock. So what exactly do I need to purchase to tune This vehicle? What cables, software, or other hardware? And can you please list part numbers? I have experience with Holley EFI, and with the old tweeker stuff used on 89-94 fox mustangs. But no experience with anything newer than that. I am just not sure what the most economical way to get this done is. Odds are it will take a few data logging sessions to optimize the timing for the fuel I will use.