E36 Rear Trailing Arm Mounting

[lukehv]

so i am building a mazda b2500 with an e36 underneath so far i have the whole front done and on its wheels but the rear is turning out to be a pain. the subframe is mounted and the diff shafts and hubs are on but i can't work out where i need to mount the trailing arms in respect to everything else and trying to find someone willing to cut the boot floor out of a car for me is far more difficult than i thought. anyone have any dimensions, angles, diagrams or anything that could help me in the right direction.

[PITT M3 RR]

Best I can say is mount up the control arms and half shafts, then determine the tracks between whatever front suspension you are using and 56.6 inches. Set a parallel line with a string and you can mauever the Rtab to where it would roughly need to sit. Cut a pocket big enough to sink the Rtab and adjust to zero across the string.