Thanks Von.

My flat tappet 428 small block was dyno tested with a 80513 HP1000, that was owned by the shop 615 hp/ 540 tq.

I brought it home and installed an 80676 Ultra HP 950, which, I guess is a hybrid version with the old HP main body, and the ultra metering plates and base plate...and is now no longer available.

I love it for street driving, 12 mpg, very responsive to tuning, but 10.49 at 124 is the best. I think MPH should be higher, so track tuning leaves a bit to be desired.