Need trailing arm measurements

[ltdmstr]

I have the back half of my '68 down to the frame to clean it up and add new parts. Unfortunately, my trailing arms are total junk. The middle portion are rusted all the way through and the two halves are spread apart probably 3/4" or so. I haven't been able to find any good used ones, and the aftermarket replacements I've seen looked like crap for $500. So I'm making my own. Does anyone have actual drawings showing the dimensions for these? My main concerns are the locations of the holes for the spring mounting bolts and u-bolts for the rear axle. And also the angle of the kick-up in the rear where the axle mounts. My stock arms are too messed up for me to measure accurately, and I'd like to get this right the first time. Thanks.