I find it amazing you know to go K04 but aren't sure where to go after. One (perhaps wrongly) would assume if you have researched thus far, got to this stage, but then not thought about going further, which you now want to do?
Fresh motor, bearings/seals/ new valve springs, reground/profiled valves/ low comp pistons (or headgasket spacer for cheap), stronger rods?
Talking off the top of my head, but it sounds like you want to unleash, do it properly.
And yes, pull the mother up before oyu go faster

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