so, i had the pcmforless/tuned by frost trans conversion harness and did not like the fact that there is no iss, so i pulled the harness off, and re-pinned my stock harness plug and added an external iss wires and plug. My question is: do i need to find a 4l80e tune with the same os # as what my 4l70e tune os to do a segment swap and have it work?