I've never heard of much issues with Valves and such on DE heads, however, I know for a fact that a VE head is better due to the fact that it's variable, meaning earlier spool, meaning wider possible RPM spectre to play with.
However the peak output, I doubt there will be any difference whatsoever.
I'm for the VE head, but unless he wins the lottery, the plans won't really change.
if money wasnt a issue the build would have been done by now :P
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