Good luck on your attempted porting work.
Take your time!
On the pistons rings, if they are the proper diameter for the bore and slugs as well as thickness needed for the piston, the moly faced rings would be a nice advantage for a quick break in!
I was reading a hotrod article a 318 they was rebuilding the short block had over 200k with moly rings and had virtually no wear on the cylinder bores! That is pretty impressive for 20 extra dollars I don't mind spending that lol
