Got most the parts off to ease removal. Headers are a pain. 1/8 of a turn from top side, 1/8 a turn from the bottom side. Defiantly going to look for a bolt with a smaller shoulder on them or turn the shoulder down in my lathe. I ordered some arp's and I ope they fit. Also in the market for some new headers. Mine are fine, just a very tight fit and I had to customize the collector to get it to aim back. Want a style that fits better and is readily available to replace if they go bad.