V6 Exhaust Manifolds....

I'm tuning a '96 3100 in a Monte Carlo. I'm pretty sure i can run 3400 exaust manifolds, but i want to know if 3800 manifolds will work, with no serious mods..I have a turbo-kit in mind..

While I'm here, i have another question. I've noticed the heads on my 3100 are identical to each other. Could I bolt up a front exhaust manifold on the rear head? I realize I'd have to put in an injector bung and an EGR tube bung, but i want true duals...

Gimme some input..

Bump..?