Bought for friends Silverado 2000, double cab, long bed, two-wheel drive. instructions because it's a 3500. I then removed the two factory bolts from the bumper bracket on the frame and when I tried to fit the assembly it wasn't aligned properly, it wanted to go in at an angle, not flush with the seat because it was hitting the bumper? So I decided to see if the gasket would allow more clearance, which it did, but still not enough. So I got out my angle grinder and cut the bumper bracket. I put