My best friend is building a stock bottom end sbc 400, bored .30 over to 406, stock gm crank cut 10/10 , 5.565" stock rods shot penned and resized with arp rod bolts, the rotating assembly will be balanced with speed pro hyper. flat top 4 eye brow pistons. we are discussing the max hp this stockish bottom end could handle on 93 oct. gas no nos. he says 450 hp , i say 500 plus some as long as its street ran 90% and raced 10% of its life and not reved over 6500rpm..... he plans on using alum heads with 70-76 cc chambers, wants about 10.5-1 comp. and a flat tappet cam of under .500 lift..... oh headers 1 5/8" duals and hei with 750 holley d/p, 4 peed with 3.73 eaton posi 10 bolt. He has a 80 malibu wagon, he is running my 350 out of my z28 right now, its a flat top rebuild with mild cam and home ported heads, maybe 300 hp... but now he loves my 406 so he wants one for his wagon. I am trying to talk him into getting at least a nodular stl. crank from scat. Any ideas to help us end our arguement.