Give Tom a call. http://www.streetrodengineering.com/...gllifskits.htm
My buddy has used his parts on about 25-30 cars, he makes everything in-house, 1/4 in metal instead of the usual 3/16, nice parts. I have his kit on my coupe, check out my journal. He has an application for the 37, you can order what ever you want.
Heidts used to print out an interesting pamphlet about sprung weight and the M2 suspension. Most street rods set the engine back far enough that weight is not a problem.