At least you're tackling the job.
Interesting story. Have a friend that installed a 5.0 Turbo V8 in his 1st gen RX7 pushing 8psi. [email protected]
at the track, drove around for a year like that. Eventually he convinced me to go for a ride. I said "This should be a LOT faster." (I had a 240Z with almost identical setup).
I looked at his plug configuration. He had a H.O. cam but wired for non-H.O. firing order. A few switcharoos and instantly went from about 200hp to over 500whp. I imagine his fuel economy improved as well. His traps went into the 130's.