Hi there are six bolts on my '76
Trillium 1300. I went under and cut off each one and used two 4"x4"x10' to support the body when I lifted it. Use solid blocks to rest the 4x4's on for sturdy supports. There are the
propane lines and a ground wire to disconnect as well. Once I raised the body I took the wheels off and lowered the frame onto 2x6's resting on the hubs, it rolled easily out from under the body to the rear with the tongue jack folded up . I did use stainless steel bolts to remount the body again. Some frames have angle iron clips welded on the sides to insert bolts into. My Trillium had the bolts through the frame rails instead. Good luck ! If in doubt ask on here to find and answer to your question . Be safe ! Duane