These go for Considerable Amount as You may Know ~
I Custom do these Once a Yr , Lower Unit is Gasket Matched to Over Sized Ports of an Upper Ported Unit . . more then just Blue Printing Stage 1 see Picture ..
His Porting is Good but Generally Found ( Not to Match ) as well as Not Inspected 10 Times on an Individual Basis -Per Runner on Both Ends ..
The Lower Unit takes about Week do do $375.00 with Your Core in Exchange , No Core $455.00
Before these are pretty Ugly Inside ~
We Know what Elevate Charges : https://www.elevatecars.com/store/vo...-manifold.html