Check out pat primers thread, it's still stickied I think, he found a diesel piston of some sort, and wet sleeve system, but it required EXTENSIVE custom mill work, and any route you go its going to be big💰💰💰💰.
To use those pistons you're going to spend $1000 on the sleeving the block, then having it bored and honed to size, so about $1300, might be more now. Wanting to save $150 on pistons?
We all get wild ideas, I myself recently pondered going 78mm as the block is already prepped for sleeve and waiting and I had to use my wisecos for a customer build, luckily I sobered up and wondered what that weed combined with a reread of pat primmers build thread made me think.
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