Tubing size for LCA's

I'm planning on buying some tubing tomorrow to make some new LCA's. What's a good size to use on the ends so I can use common, cheap poly bushings (outside diameter and thickness)? And I'll probably weld it offset like the RE arms to get a little extra droop in the suspension, so I guess I'll have to use a different diameter in the middle than on the ends, but that size shouldn't be that important. TIA.

http://www.naxja.org/forum/showthread.php?s=&threadid=14758

If you read, they are only $10 ea

Yep, been reading that and debating on that or trying to make them even cheaper by just cutting and welding tubing, we'll see.