I plan on swaping my tranny for the l80e and installing a transgo shift kit and the servos for 2 and 3rd. I have an 04 rcsb 2x4 automatic truck. I need to know every little detail that i need to change so that I can calculate my cost to determine if it's worth doing.

 

You will need the transmission, new converter, driveshaft modification, wiring harness, new tune, crank spacer, dip stick tube, oil line extensions, transmission mount, and im sure there is more that im missing. With the price of the trans, converter, and all the parts and labor, you could be looking at 3500-4500

 

Speed inc has complete swap kits, I did mine through a company near here and for a fully built one rated at 950hp and 1000tq with a 2 year warr and all of the swap parts for 4300. that was installed also