The 20v and VET (same casting) head has better cooling water area in the head it is a superior head to the standard 20ve head it is meant to be able to be ported like crazy whereas the 20ve head has more limits before you hit water jackets and stuff.
Finding a 20v head is the issue i mean i bought a complete low mileage 20ve motor for 500 bucks and it ran fine even when boosted.
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