Need help, advice, and numbers

I recently bough a crate engine for a friend and put it in his truck for him.
300+hp 350cu for about 2,300 with no tax delivered to my door and ready to go.
It was an ATK rebuilt out of Texas, had great oil pressure and ran perfect pulling 315hp/325tq on the dyno tune.

FYI, if your freeze plugs are still in the block you are probably ok.
I had an engine freeze and pop 3 of them out and it was still ok.