i need rear suspension measurements

[hotrodsbyray]

i need help - can anybody tell me how wide the rear crossmember that the trailing arms bolt to?
how tall is it where it meets the frame?
how far is it from the bushing the trailing arms bolt into back to the center of the rear axle?
how wide from where one trailing arm bolts to the rearend across to where the other one bolts on?
i am building a 57 short stepside and investigating whether this rear suspension set up would work.
thanks!