The hardest part was getting the y-pipe clamped and sealed. I just bought 2 band clamps from NAPA, which we welded the bolts to the clamps so I didn't need 2 wrenches in there to tighten them. I used half a tube of RTV on both pipes, slipped the clamps over and pounded it up into the crossover and rear header. Then I busted up my hands trying to tighten them, took a lot of force for a loonnnnggg time to tighten each bolt. Then it took another 4 hours to try and put a custom exhaust in there with the resonator and cutout. It would have been nice to have the stock catback in place but the previous owner put some stupid **** in.