My 58 Viking suffered a total brake failure a while back, and I decided to tear it all down for rebuild. Problem is, I do not know where to get the slave cylinders. The fronts look like they may be standard size (1/2 to 1 ton), but the rears are definitely larger. The rear axle is the GM 15k 2 speed. Also, a source for parts for my hydrovac and master cylinder would be nice, if I can salvage them.