What is a good combo for turning high rpm?

The reason the engines are revved that high has nothing to do with gearing, and everthing to do with how power is made. Horsepower is torque over time. The more times a cylinder fires on a power stroke per mintue, the more power you make and get to the tires over the same time (rotations per minute). 8K rpm is 4000 power cycles per minute. 6K rpm is only 3000 per minute. The trick is making the power during each of those firing events, and keeping the parts together. You're not going to toss a 9K rpm capable SB2 together for 7-8K. Which is why I look at t eh car and ask why the budget? The mopar engines can do it. A factory block could do it. And it's not about screens and magnets...lol. Mopar's oil system is very good on it's own, and with some minor tweaks will sustain the high rpms. It's more about top of the line parts... Like billet cranks, rods with honda sized big ends that weight 2/3 of a std I beam Mopar rod, and pistons that will take the stress over and over. Plus, a stable valve train. I think, at this point, you have a car that is not competitive, and to be competitive you've got to step up and change how you're thinking of winning. Or by the Chevy power train, which i think would be tragic in such a cool mopar.