That is the way to do it. My dog will run a frizbee into the ground and fold it in half on the way back. Chuck it balls seem to hold up pretty good for fetch. He just destroys toys if allowed to just chew em.
It will.
Check the main bores, those are notorious for being out of align.
Comp 268 cam sounds mean in a 454, air gap dual plane and a 750 is a sweet combo for a street 4x4.
That is how I built the one I had, 781 heads. Sold it to a buddy who put it in his 78 k20. 4.10s and 35's. Thing runs pretty well. Sub 10 seconds in the 1/8th mile. Has enough stretch to run low range. Pissed off a lot of the diesel guys lol.