Most of the bolts in the body are going to be one of the following sizes; 1/4-20, 5/16-18, or 3/8-16. These can be found fairly easily, however you will want to pay attention to the bolt grading to prevent using too weak of a bolt for the application. Stay away from the grade 2 bolts. You want at least grade 5 for most parts, grade 8 for chassis and heavily stessed parts. You may want to consider a bolt kit for the body, you'll save time and money by not having to go get bolts every time you need one, and the kits are marked where they go so you won't be guessing what bolt goes where.
