Yup, I know that for a fact, and from experience.
Consider if the opposite were true: now you have engines out there with potentially higher-than-expected compression, potentially subject to octane (not enough octane), timing (too much timing), fuel delivery (too lean) problems. The liability for a parts manufacturer for offering something that does not comply to the original design is too large, even if we're only talking a couple of fractions of a point. And since you're redesigning a whole casting anyway, it's a simple math equation to move the piston pin a few fractions of a millimeter in the process.
But, take that for what it's worth, and what you paid for it. I would strongly suggest that you contact your supplier, and ask THEM specifically. - GA
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