Back in the 70’s a machine shop I knew of used to install ford pistons with Chevy rods. This took advantage -if memory serves me right... of Off set grinding the crank with above deck pistons. Raising the compression and shorting the stroke. The drawback was the head did not flow enough on the higher rpm. The shorter stroke allowed for much higher revs. I know this does not answer your bolt in kit question. BUT if you wanted to create a kit and you said you did not- it gave a possibility. Hate to waste this trivial info in my brain. Does me nothing to take this nugget to the grave. Lol!
Good luck in your quest.
Syleng1
