Spoon 4-in-2 exhaust manifold

Does anybody know if either of the 4-into-2 exhaust manifolds that spoon sports makes for the DA6/8 fits in a 93 LS? Any other combinations that you know fit will help me out. I.E. B16 top manifold fits on LS or B17 top manifold part fits on an LS. Or if anyone can give me a reason other than price to not go with a spoon header.