making new trailing arms?

[pbmcauliffe]

Okay, a friend has a bare 67swb chassis that we are building to replace a previously bad c-notch job (frame is bent down 2" in rear).
So anyways, we were kicking around ideas for the rear suspension last night. I was suggesting a 4-link setup with bags, and he asked if I could flip the mounting brackets over (approx. four inch drop) and make new trailing arms, since he likes the way they work, but wanted something claener looking, stiffer and that doesn't flex/twist.
So in lieu of boxing the stock arms has anyone, retained about 6-8 inches of the front section, and added rectangular tubing (3"x5"x.25" slid over the 6-8" section) to this, pie cut, bend and weld the back to get the angle where the axle mounts?
It will be a daily driver, 8-10" drop, 20's, mild motor.