As far as CHEVY NO. The only way you going to get one for our chevy L6 is to cut up a set of Vthing heads. Then have them rewelded ,Then you will also have to Make Your own Lifter side covers as NOW the push rods are out side the stock covers.
Plus The block will need to be ReDrilled for the bolt patteren.

Larry/Twisted6
[oooooo] smile
Adding CFM adds boost smile
shocked God doesn't like ugly.