tore into it today after drilling out the exhaust flange I was out of play when it came to bolting it on so dropping the rear o2 and having a pipe welded after I finish installation
had two bolts in the middle of rear header get their heads stripped so i bought a vice grip bolt puller awkward looking sockets but did the job beautifully bolts are GM only...so they will be in tomorrow and I can mount downpipe and head to the muffler shop for a weld got a feeling 5 block drive there with the gap and no cat is gonna be mind numbing loud
