I think you're running a track car, so I'd upgrade the rods to K1 at least, and Carrillo if price is no object. I'm sure cometic can make you a headgasket of any thickness you want. Dished pistons...would likely have to be custom.
Your biggest issue will be the cylinders. If they aren't scored, they likely have too much ovality and taper, so you won't get the new rings to seal very well.
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