Which oil pump

Thanks for the input.I was just going by what i read in the Big inch small block mopar book.If im using a straight 40,what would be a good weight to go to?Stock clearances.I have been shifting at 6900,but Ryan at Shady told me to try shifting at 7200.Thats where they shift their W headed smallblocks at.So next trip, next week will be a trial for that.And im going to be bumping the timing from 32 degrees to see what happens,good or bad.