IMHO-You don't really need a forged crank. There's plenty of drag cars running steel cranks.
Also IMHO-Aluminum heads? $1800 for unported bare heads which don't flow any better than cast heads out of the box. You spend a lot of bucks to save 50 lbs.
True-There's a guy on ROP (I forget his name...maybe RedDropTop?) runs a street 'charger on his Cutlass.
True-Ch#vy drivers makes a big deal out of 4 bolt mains, but their blocks have low nickel content unlike Olds....so 4 bolts in mush is better than two bolts in mush.
More true-I say it a lot, but my best bud runs a 70 442 W-30 with unported iron heads and a QJet deep into the 11s. He is also a builder/blueprinter specializing in Olds.
Really true-If you put a location in your profile, maybe we could suggest someone close to you.
C.J.