what wall thickness tube for 3 1/4" diff housing tubes

[juniorstu]

Which wall thickness 3 1/4" tube in c/m should i be using with my new housing?

0.250" ???

3200lb 91mm GT55 420" SBF, leaf spring, 49" wide flange to flange.

[Scott @ DLS]

I don't think there is anything thicker that the .250" wall with a C/M tube. I'll make some calls and get back to you.