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Idahome
Joined: Wed May 2nd, 2018
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A combination of both is what we are after here.
It is pretty easy to add crossmembers where needed
A full belly pan skid plate that attached rigid to the frame would also help a great deal, as does a full A B and C pillar cage that attaches rigid to the frame.
I have been twisting my Bronco II up off road for 25 years, the frame bends and twists quite a bit. I have solid engine and urethane trans mount as well as urethane body mounts. No cracks yet, but I am sure after 350K miles the frame has probably seen better days. I would love to have a bare frame to build off of.
(that is why we were pulling the 92 sport frame so my friend Brett can build a frame off wheeler)
I would box much of it and add 3 additional x members or ladders to attach the two rails together. I would also go with solid body mounts, solid belly pan and solid mounted engine/cab/bed cage. That should be plenty overkill for a RBV.
I have not run sway bars on my BII for about 7 years now, soft springs and very stiff shocks make the suspension work
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I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks