Need turbo 318 help

I built a 318 turbo mag and used 2.5 409 15ga. stainless with 4 flex joints, all v band. 3" stainless down pipe. In hindsight I would have used 2.25-2.5" heavy weld "els" and built a log manifold. The reason is it would have been easier to build log manifolds and they wrap up pretty nice to retain heat with heavier gauge steel wall. A lot of guys have success with swapping mag manifolds from side to side, they're ball and socket style. Although power steering box cannot be used on an a body. Only manual or a different style box. I've always though it would be smart to just run your crossover pipe behind the oil pan and you can retain all accessories, so it's really up to you.