There was a Speed-pro (TRW forged) piston available at one time in 40 over:
https://www.summitracing.com/parts/slp-lw2304f40
It was a lightweight forging, hence the LW.
I looked for them but could never find any available.
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70Z28 04B Norwood Forest Green-white Stripes Black DeLuxe Interior
Owned since 1978 - First Car
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