Mine is 9:1 Compression. Forged everything, H Beams, custom pistons with the Ring lan held down a bit further than normal and tool steel wrist pins, Heads are studded with Cometic Head Gaskets. If that means anything.
My main fuel system is 91 Pump and the secondary fuel system for the NOS is on VP 110.
The motor without the hit I would think makes over 500HP with the Solid Roller Cam. It seems a bit more powerful than my last stroker in my 70 Dart.
I did read a few things on the net that were saying you can get away with a more aggressive tune with lower compression and addition to that the motor would respond better to Bigger Hits than the same motor with a Higher Compression would. I guess I am about to find out.