RE: best tuned pipe for the 5t???????????
Personally, I would go for teh rear pipe, and I am not sure if mods are needed.
From teh looks of a 5T, I think it would require mods as teh body and the rear part of the roll cage might get in the way.
I personally have not put such pipes on a 5T, I was thinking of the 5B as far as chassis and structural clearances.