I could increase stroke, but that would put more demand on head performance? Trick Flow made 687HP with 10.15:1 and 505 cubic inch with 270 heads. I somehow think that combination stretched some would reach 700HP+. Plus a little, not 100HP+.
In the testing I did for Trick Flow I made 750 hp with a pump gas 470 engine using the Trick Flow 270 heads. It required a decent size solid roller cam though. I don't think that power level could be reached with a hyd cam.
You need to figure out what you really want and then go from there. Figure out if running 9's is important or if you want the car to be street friendly. If you want both then the job gets harder. Most of this is simple math starting with the car weight. Once you know the weight you'll know how much power is required to run the time you want. Once you know the power requirement you can figure out the engine combination.
