had a friend of mine ask me how hard the instal is if he bought the down pipe back 4" exahust(mbrp) for his 04.5 lly x-cab complete kit vs. the cat back kit and then purchase a front pipe seperatly. I have the second kit and was pretty easy but not sure what the "complet turbo back kit" without the 4 bolt flange would be for instalation? thanks

Is there a certain place to look on the forum for the diffrence in instal?

The install will be VERY easy. Hardest part is getting the old system out. If he has an 04.5, I would suggest he get the cat-back kit and purchase the front-pipe seperately so he can swap the cat in and out when necessary. If you have any questions, feel free to give me a holler.

thanks , i will steer him your way.