Angle Milling

I know. Rest assured, it's not one of a kind either.

The biggest thing I would think with angle milling the slant head would be you would end up needing to enlarge the ad bolt holes due to interference and the fact that the bolts will not tighten down flush against the head.

well correct, that would need to be corrected. Im more interested on whats to gain or lose, fitment/adjustments/etc are not my concern at this point, i need to figure if its worth what i'll get.