Whats your engine Dave? You have a roller yet? PTC does nice work, but If I were going to try to dig up some E/T through the converter I would try Lenny at Ultimate Converters.
Back when I ran the Dakota, I ran mild ported 440-1's and a solid flat tappet cam.
I switched to a roller, and had the heads CNC ported by MCH.
The truck picked up .5 seconds in the 8th mile, and 10 mph....

[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]