440 6 pack jet, power valve and float needle and seat questions

I’m rebuilding my 1970 440 6 pack set up and need answers regarding best jet size, power valve and gloat needle and seat parts to use. It’s going on a 440 motor stroked out to 526 in.
Two different Holley technicians told me it IS a streetable setup even w the 350 cfm center carb.
It just needs larger primary jets bumped up to a larger size - approximately 65s
But didn’t have info re: power valve and float needle and seats
Anybody have any answers, ideas?
Thank you
Shutudown4