Your P/W is very similar to my old race car. Best ever 10.13@131. I've learned a little about stuff since then. My take is there is not a ton left in your set-up ET wise. Consistency, yes. What I've learned; converters can be looser than what you think. Shocks can be tighter than what you think. Rear gear has little effect if it's close. Air pressure can be higher than you think. Tubes are worth a lot. Lightest springs/torsion bars that will hold the car up. You may not need Santuffs, But the better the shock the more consistent the car. Video from the side is invaluable. Do I know it all? Far from it. But the car was good enough that it went 35/36 rds, 8 races/7 wins before going red last Saturday.
Doug