Camshafts and Compression

The photos not that great I know, the 7.650’’ may be slightly long. There is some clearance around the adjuster.
I might just go for the 7.500’’ rod.

A .150 difference is too much. Looks to me like a 7.600 is what you want.

If you want to do it how Chrysler says, set the adjuster at 9/32 protrusion and make the pushrods that length minus valve lash.

That is the correct way to do it.