When you remove the control arms, just sell the uppers and the entire brake system and buy Global West tubular upper control arms and their disc brake set up as a package. The original lowers are fine, but when replacing the rubber bushings, install their bushings in that too. Better handling geometry built into the tubular arms.
The rear axle has been highly modified from original too. It appears the frame rails have been modified for the 4 link, coil over modification, but if the channels with all the holes on the frame are for the shocks to mount to, I hope there is another bar connecting them together and mounting to the floor pan for strength.
Mine with the GW uppers and disc conversion. Sorry about the huge pic, don't know how to downsize that.
