If you were boring it could you get the custom pistons a little wider to maybe give you a few extra cc? All that cost though, surely cheaper to fit the whole M54B30. I don't want to put a whole m54b30, I want a bigger m20 and I already have an e46. I got those internals for almost free, and since I...

Anyone ever tried using the m54b30 internals in a m20? I saw in another forum that it works and it gives you a 3.0 L engine. The only hitch being that they were not sure with the b30 pistons for they were 2mm above deck and so they used JE pistons, but when I looked at the m20, I saw that the stock ...

To Monkey27, how effective was the deadening, is there substantial external noise reduction (road noise, wind and engine/tranny noise)?