I am trying to decide between the K541M81 and the K542M81. I want my compression ratio to be somewhere between 8.4-8.9. I will be using a .074" Cometic head gasket. I tried to use a compression ratio calculator, but couldn't figure out what my piston-to-deck height was because when I entered what Wiseco said it would be, it came out to be a lot higher than what it was supposed to be. So which of these 2 should I get? Not trying to start a debate on which piston company is better, just want some opinions on these 2 sets. Thanks.

 

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