Do to time and money restraints I'm canning my plans for modifying my tbi system for the new smallblock I was building to go into my C10 truck. Now I really need help. I have a complete 375hp 396 bigblock engine that I'm putting into my truck this weekend. I have plans for reusing my modified Tbi fuel injection system and 5 speed transmission. What do i need to start out with to tune this engine, I'm running a 7747 ecm with a 2" bore tbi and 350 cop car injectors. Which prom image would be the easiest to start out with one for a 5.7L or a 7.4L? The engine has a little cam, hooker 2 1/8" primary tube full length headers, twin electric fans and full 2 1/2" dual exhausts. I know this is not a common swap but please help cause I don't want to go back carb. I have the software, moates burn2 burner, data logging cable and chip adapter already i just need to know where would be the easiest place to start with for tuning it.

Thanks,