Lost no time in placing the body on the frame, (just had to see how it looked). Even the rollbar fits well. I had gotten an installation video from 4 wheel drive hardware http://www.catalogs.com/search_3.asp?id=959&depid=33 to get a little educated, and picked up a few things from it. The way they start out, they place four 2" spacers at the middle mounts and measure the remaining mounts, then mount the hood, then the fenders and grille and whatever length mount the grille takes that's what is is. My problem with this method is that it wont always cosmetically look ok. I wound up with way too much of a gap at the rear crossmember and next to none at the grille. Trying to correct this we kept adjusting the mount lengths in the middle which kept rocking the gaps back and forth. I finally got tired of doing this so instead I started with the rear crossmember, Got a nice 1/2" gap then put two 1" mounts up front as a starting point. I checked for clearance in the middle which was ok. Then the hood was mounted, the fenders and the grille. The grille mount was adjusted until it was cosmetically correct by lifting the front of the tub which in turn allowed the front body mounts to fall into place. Now that the front and back where correct we made sure everything cleared in the middle, measured the rest of the body mounts and cut them. Now keep in mind we put no body lift on this, if you do, it can still be done using this method with a lot less hassle. Reinforcing strips are used at the mounting points of the body and fenders. This made for a very ridgid setup, you could actually lift at the grille and lift the front of the body if needed. I can remember going to shows and seeing Jeeps with no body lift with a very unsightly gap at the rear crossmember or at the grille. If you start in the back this can be elliminated. Again I can't say enough about this Shell Valley body. Give them a call or check them out on the web. http://www.shellvalley.com/