AJ's Opinions; for the Teener Street guys. You know; zero to 60 and a decent cruise rpm.

400 sporting 9:1 with dual quads and eddy heads cranking off 500/500 backed up by a 2200 stall 'verter and 2.91's

i think that might just be the ticket...
To me that's one of the main reasons for running large displacement is to be able to run higher gears and for them to be or close to optimal for the combination.