It's been over 15 years since I did this and I don't have the truck anymore , but.....If I recall, I bought larger, heavy duty U-bolts and such, but I didn't necessarily have to. I ended up having to drill the holes in the plates larger which was tuff because they are hardened. If I remember, the passenger side uses one U-Bolt and 2 bolts. I also reused the rear shackles on the front as I never unbolted the top. Also, if you only do the front, the back of the truck will be lower and it will look stupid. If you end up doing the rear too, and even if you don't , you will need to adjust your headlights up or down as needed. You can use the same size U-bolts as the front axel isn't being changed and that is what the U-bolts go over. The springs are the same width, just thicker or more of them. Also, I recall being told NOT to lubricate the U-bolts! You want them to rust in place! I got that tip way back in 1978 when I worked in a Dodge truck dealership. Make sure you support the truck frame well while you are under it! Also, spray the hell out of all bolts and nuts with WD40 or some other rust-bust several times in the days prior to the job, it really helps to break stuff loose. Good luck to you!