What is a good combo for turning high rpm?

I put my budget at 7k mainly because if im going to spend any more than that I'll just go lsx motor, but id love to keep it mopar powered. I guess mopar powered road race cars are not that common. I know of nobody doing it in my race circles. I guess what I was looking for someone here which a proven setup to say you need x,y,z parts and your good. Its sad that at the track all you see is ford or chevy based motors.

How much are those Ford and Chevy guys spending on thier 8K rpm motors? High end rockers arms I don't think cost much different that Ford or Chevy.

I just read the Nascar LSX Camping Word spec crate motor cost around $25K. It makes 600 hp from 6200 - 8000 rpm. Just what I read googling some info.
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What about taking two steps back and looking at the original goal/dilemma? That was to avoid needing to shift a certain places in the track where others have said they are not shifting.

Are there other ways to accomplish that goal without building an 8K rpm motor? Maybe not. Just trying to view all the possibilities.