Well i've had mine on for a few weeks now an i love it. It sou ds great, not too loud but loud enough. The install took me 56 mins on a lift. It would of taken shorter if i diddnt loose two bolts. Really it doesnt need instructions. Like it says, bolt on. Six bolts coming off and eight going on. It would help alot if you use an impact wrench because i tried to do it in my garage and from the one winter in ct my car went through it welded the bolts in rust. It would help if you had another person but i did it bymyself. The quality is awesome. When i wash my car i always make sure to polish the mufflers too

anymore questions you have pm one of the other guys in the group buy because im leaving for a month and cant be reached.