Nothing should bump into anything...I have a THDP too. The cat delete pipe is replaced with a pipe with a coutout section installedQUOTE]
Actually, that is the pipe I have on my car...at least it looks the same based on what I can see in the pic. When I bought my THDP it was a 3rd hand type of a deal. It passed through 2 people who never installed it. Both sold their car before they used the pipe. As such I was not able to "option" it as I wanted. It sounds like you could get a CAT, a straight pipe, or the Y pipe when purchased new. One way or another I have the Y with the manual cover. Given that, if I have no clearance problems, I guess the only other thing to think about is mounting. The bolts on mine are tacked in so I am guessing I need to grind out the tacks to swap in longer bolts. I want to say I only have 1/2" of thread through the hole. More than enough for the flat plate but probably less than enough for the E-Cutout.