Hey fellas, been away far to long, looking to put a full roll cage in a deuce cad, anyone ever do it, thanks
Ah, a roll cage on a Deuce! A noble ambition.
To accomplish this objective really depends on your intent.
1. Do you want it to "look" rough and tough?; or,
2. Do you want it to REALLY be able to protect the occupants from a rollover accident?
If, #1, then just have a ball winging it.
HOWEVER, IF #2, then you've got a pretty hefty structural engineering challenge ahead of you.
Plain ol' 2" Steel Tubing just ain't gonna save your arse from being crushed by the 13,500 pound dead weight of an M35. Add to that the additional forces induced by the inertia that might cause your MV to roll over in the first place, PLUS any forward (or backward) momentum forces at the time of the incident.
You MUST also look at the M35's chassis design in which it INTENTIONALLY FLEXES. ANY attachment of super-structural additions such as a roll cage will effectively stiffen the flexible frame at the point of attachment, thus potentially inducing frame cracking nearly adjacent to the point of "new" rigidity.
WHEREAS, attaching a roll cage only to the cab sheet metal itself would be virtually ineffective as any transferred load from the rollover incident would either rip the lower cab section apart, separate the entire cab from the chassis, or simply crush through the cab further insuring injury to the occupants.
Your most effective protection from what you seem to be anticipating is..... DON'T ROLL YOUR TRUCK OVER ! ! ! KNOW your vehicle's performance envelope and DO NOT VIOLATE those parameters - EVER!
Adding an inadequately engineered roll cage to any MV would, from the psychological perspective, provide a FALSE SENSE OF SECURITY for the occupants, thus opening the roll cage installer to tremendous LEGAL LIABILITY for any subsequent injury or death.
From my structural engineering experience, and In My Humble Opinion, in theory your idea might sound great, but in application you're farting in the breeze (and I say that in the most caring way possible).