I actually got my air chizle out with a long bit and cut the heatshield bolts off both sides, Yanked all the heatshields out off the precats then went to town on the precats nuts and bolts. I knew I did not need to save my precats so damage to them didnt matter to me. I got a lil lucky on the drivers side that the one NUT that looked like was really going to be a PITA had already fell off at some point. The top 2 bolts were pretty easy the bottom nuts are the patience tester. Top right bolt air ratchet and a 13mm swivel. top left bolt 13mm deep socket and my bent handle snap-on flex head ratchet.. Nut on bottom=a shorty wrench and alot of patience. I used just about every tool in my tool box. Then ahd to take them back off because the dahm flanges were leaking. DONT USE THE GASKETS IN THE KIT for THE TURBO. Use the OEM ones. I put the divider in over the gasket supplied and they will not sit flush on the tubro.. It makes the divider too deep and it will hit inside the turbo housing not alowing the dp's to seal to the turbo.