You'll have as much money in a set of rebuilt cast iron heads as you will a set of Stealths. They are easily upgraded with CNC porting as well without the worry of cracking. Stock look to boot.
By the time you mess around machining old, wore out stock junk like rods and crank, you might as well buy new and have it bolt together, be stronger and be lots lighter!
My motor looks very stock but, in the end, I threw away everything but the basic block, valve covers and timing cover!
A 4.25 crank with .030 makes 505" and there is zero downside and it falls in the block like it was originally put there.
'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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