Hey charger 440,

I am building almost exactly the same thing. I am using stock bottom end, but just gonna swap in some KB107s. I am doing just a little bit of block and head milling on my own. But anyways, I have talked to a few engine builders in my area and on moparts as well.

It seems the general conclusion has been to use Seal pro rings. I've been told that for a stock-mild build they're great and they're only like 50$ I think.

Like stated before, i've been told that the use of moly over a cast come down to the surface of your cylinder bores. If its been fresh honed then I was told to use moly rings. But if not, then i was told moly rings were kinda a waste because the moly coating will wear off pretty quick anyways.

Take that for what its worth, it's all second hand knowledge for me. Just passing it along.