V6 even firing motor i am told and therefore believe straight pipes to be the right choice for exhaust the x and the h I see useful on the v8 because of its firing order? I am looking for helpful comments not go buy a V8
Straight pipes just piss off people, add nothing for hp, just loud. A good h pipe with cats and duel exhaust with mufflers and tail pipes, depending on year a V8 exhaust will bolt up.
what year and what's the plan for it?
You may also want a take a few minutes to familirize yourself with forum layout. This is a good place to get an overall view of how the forum: https://www.stangnet.com/mustang-forums/
It is not necessary to create multiple threads for the same purpose. Create one thread containing all of your car info instead of several containing small pieces.
It might also be helpful by starting with the year of the vehicle.