Outer Limits 4x4 Board

does anyone have experience with turbo ex-manifolds from ebay, one guy kando dynamic sells them but isn't sure which model it fit he advertises them as g13 manifold which i find confusing because i think it refers to the g13 twin cam and the guy can't give me a straight answer.
also which is better top mount turbo or side mount like the one kando dynamic is sell

Can you post a link? I'm currently looking for a G13 twin cam top mount turbo mani for my Sierra with a cultus motor. I'v been considering just buying a regular one and flipping it.