Someone who isn't having fun at the expense of someone else's impending bad decisions..
I'd like to see the OP shed some weight if that's his goal. But I don't think he knows how to do it, and the suggestions made to him (and his acknowledging that those are the mods he was considering already) show that he has the complete wrong idea of how to accomplish this. And your suggestions say the same about you.
Tube doors are for visibility for wheeling, they're not safe for on-road use and I still suspect to be legally questionable for street use. Sure they're lighter than stock doors, but they aren't a door, and a door is more than a way to get into a car. You will lose a ton of MPG by removing the doors. You will lose the structural integrity of the body by removing the roof and not adding WAY more weight in strengthening. You will lose MPG by deleting a tailgate, or replacing it with a net.
This is common sense stuff. Hacking up a truck is not something people suggest to other people when neither know what they're doing.
Aye Aye Captain! So what are your suggested weight reduction/mpg ideas because I haven't seen you post any..