Small block intake

I really like the cam swap, some free flowing exhaust manifolds, the out of the box performer intake, and the 650 AVS2. Any thoughts out there on the possibility of swapping magnum manifolds onto it? If they fit, a set of the $120 Chinese stainless shorty magnum headers looks like a better option. One of my crazy friends has a set on a truck that has seen some severe use (water up to the valve covers) and they’re still holding up. They are on the second engine in said truck.