[ryanroo]

Yes, all the same for a roll bar vs a cage.

if i was going to the trouble of doing a bar as pictured, i would pony up for a little more tube and few more hours and have the shop run some a pillar tubes and make it a cage. a roll bar is definitely a step up from nothing, but a cage could be the difference between a bunch of stitches in your noggin and no real damage if the truck goes belly up. this also adds the opportunity to mount the seats and seat belts to the cage, so if you do have a bad turn of luck, you, your seat and seat belt are all tied firmly to the safety structure. that is another level of involvement, and if i was doing a street rig and just going for safety i dont think i would take it that far.

another thing to consider if you are going to connect the bar/cage to the frame is the current state of your body bushings. i would make sure they are new and polyurethane. the frame connections to the bar should be mounted on some form of bushing, the most likely candidate will be poly t-bushings. they will essentially act as additional body mounts. if the current mounts are old and smooshed, if you ever go to replace them after the shop builds the bar, nothing will fit the same as it should. also, given the likelihood that the bar will tie to the frame via poly bushings, you will want to match that so the body bushings dont start to wimp out over time while the poly bar mounts are still sturdy. that will create a bind and a lot of stress on the sheet metal where the bar to frame tie ins are.