^^You may see about 15rwhp, but it kinda depends on what mods you have. Anyways, the muffler shop I go too told me that LT's were a bitch to install and they would charge me about $500, they told me to get shorties because they were cheaper to buy and install and that they are just as good as LT's. And they said if I wanted LT's they would install them for that hefty price as already mentioned.

 

https://mustangforums.com/m_912792/tm.htm




Theres a link to my frustrations with long tubes and also an exhaust clip of the finished product.