Fastest/ most powerful slant six?

One of the neat things about the Green Grenade is that was done with an aluminum block and one of the hard to find Hilborn injection setups.
130" wheelbase and weights in at 1052 lbs without driver. Chassis is chrome moly built in '61-'63 era and is certified to 7.50
The dragster has ran a 10.51 on an easy tuneup.
We built a shorty 904 for the dragster to keep it all MoPar, but that didn't work because it would wheelie leaving in first gear. I want to keep it period correct for 1965 and older, so no wheelie bar.
Now we are changing to an iron block and a powerglide and looking to run in the high 9's.

Mark