2000 chevy shortbox. LQ9, LS3 intake adn heads, long tubes.
Contacted texas speed first they said this would be there recommendation. 225/230 617''/612" 112LSA. Is there better out there or are they close to being right?

 

How much advance? Not sure I think its ideal. It depends on the advance though.

 

what are you refering to as far as "advance?"