metal thickness for manifold

i wana build an air maifold since my air tanks only has a couples outlets. i wana make it out of 2x3 but what thickness should i use? also does anyone sell the threaded bungs?

i wish i could show you mine, i used 2x2 square tube with 1/8 wall, and just capped the ends. i did it because my air tank is way in the back of my truck, and i didnt want to see air lines goin all over the place, so i made one air line out of 3/4 round tube and it goes up to the manifold right behind the cab and then to the valves, looks real clean.the threaded bungs, you can just buy 1/2 inch couplings from the plumbing department at lowes or home depot or whatever, i'd stay away from the galvanized ones cause they suck to weld. also, you can buy one and cut it in half, then weld it on there, cheaper that way, buy 2, get 4 ports.

http://secure.chassisshop.com/partdetail/C73-683/

I bought one from here a few years back.Al Manifolds  After considering price for tubing for the manifold, the threaded bungs, and the time to weld it together, it was just cheaper to order one.

thanks

---------------------------------------------Originally posted by DroptSdimeI bought one from here a few years back.Al Manifolds  After considering price for tubing for the manifold, the threaded bungs, and the time to weld it together, it was just cheaper to order one. ---------------------------------------------definately. only reason i did was because i needed it right then, made an air tank and manifold the same day

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