There are bolts that go through the body mount and may be rusted badly,They may be a pain to remove. As for the cross member, it is welded on and must be cut or chisled off, if its not already rusting off. I used a heavy piece of angle iron and welded it to the frame then another small piece of angle iron welded to the inside bottomn of the new cross member to form a channel for the gas tank mount.
1982 cj7. Frame off. shell valley kevlar body, stainless hinges, Bestop seats and supertop, KC titanium lights, Homemade swing out tire carrier with spare front wheel bearings/hub, Built 304,DUI,Edelbrock shorty headers with dual stainless 21/2 tubes into incynerator cans 21/4 dumped out the back,Edelbrock 600cfm, performer intake and cam, Borgeson lower column, Centerforce clutch, NV-4500, Dana 300 w/custom built twin stick, Homade 1/4" steel skid plate, 2.5 soft ride w/ 1" shackle lift, 33x12.5 mtr's. Stainless fuel and brake lines, Braided hoses. more...