Yes, thats pretty much a given at this point,.,, and Im only allowed to run 4 venturis at max anyway.

But the burning question is compression (I was thinking 12:1 at least) But given I am allowed to go to .60 over- it is hard to find pistons for that size! (4.310) and there is nothing about stroke so I guess I will go up to 4.150 if I can get away with it.

And the second (well most important thing really) is choice of camshaft , as the heads will be flowing around 300cfm @ 500 lift I am told, I need something that has ommph up top but still carries torque from lowdown, say you might dip to 2000 after a gear change - it needs to haul the mail but not be like a high winding gasser motor that makes nothing under 4000 ,.. Rev limit I think is 7000 , and that sounds about right to me.

Carb will be a 4150 modded with all the good bits for trackwork, I'm not messing around with carbs myself as although I can do it, someone who knows what they are doing will eliminate any trace of bogging or hesitation and having that happen during a race could really ruin ones day.

Can anyone recommend a builder who deals in road and circle track engine frequently / exclusively? doesnt matter where in the country they are located..

I think I will go for TTI 2" primary headers with the 3.5" collector and everyone who has fitted them speaks highly of them, and they specialise in Mopar exhaust. I think 2" is the best compromise as the bigger 2 1'4" ones kill too much torque down low without the hassles of the slip joints on the larger models..

Anyway - keep on Moparing Mopar Mopurists