40FordDeluxe - No plans for making the brackets double shear. I've been doing these the same way for years and never had a problem. Angle iron is roll-forged so it's pretty tough stuff to begin with and the 1/4 inch wall stuff is really stout. I keep the length of the brackets as short as is practical so there is little to no flex and I use grade-8 bolts for all suspension attachment. I think you could rip the frame in two easier than you could break a 1/2 inch grade-8 bolt...

Driver50x - If you can use any of my ideas and practices on your build, then this thread is worth my efforts. You're building a T-bucket; have you seen my build thread on my Track-T? Also, have you considered doing a build thread here on your T?