340 Exhaust Manifolds on Early A-Body??

what issues are there with the TTI's?

I like having the look and added power from the headers but honestly these things are in the way of just about everything you try and do. The combination of a cramped engine bay and trying to fit good flowing larger tube full length header just doesn't work so well. The steering shaft has to go through the tubes, the torsion bars have too also, the steering centerlink and inner tie-rods run very close, the drivers back header bolts are a pain to get at, unless you run a remote filter your gonna dump oil on the tubes every oil change, and the list goes on and on. I guess it all depends on what you want and your application but for me I love the old cars for the simplicity. And of course the sound and power of an old V8 LOL! As long I could get decent flow from a manifold that would fit good in my car I would gladdly sell my TTI's.