Sorry if this is in the wrong place, I am new and not sure where to go. I have done searches and have not come up with answers yet. I have a 1970 rs 350 with 202 angle plugs. All I keep reading is will fit angle plug heads but they have to be aluminum? I am looking for what headers will fit and have clearance. If I'm wrong in making this post just let me know and please point me in the right direction.