Just one problem. If you put the bolts in first like I did they will be very difficult to align with the holes as they are very tight. Installing the studs after installation requires some method or helper to hold them in place. Once the top bolts and nuts are in place, the bottom one will be a breeze. I think if you put the rear bolt in and manage to get the nut out from under the car you can put the other two in from the top. Check if the engine light is off, YES! Oh yeah, get new gaskets/seals. when you order it. I broke one and had to go to the dealer for a replacement at dealer prices. They are a filled hollow ring of steel that fits into a groove. Not easy to make. AutoZone and Advance do not have these seals.