Hy Matthew Blair, early 50s Cadillacs had a remote filler mounted to the firewall, for their underfloor master cylinder, maybe you could find one of those. I have manually bled lots of big trucks in my career, but when I was a teenager, one of my friends built a pressure bleeder, using a one gallon can and a soldered in air valve, he used that thing for years, every new master cylinder he encountered meant another trip to the wreckers, to get a cap that would fit, so he could drill and tap it for connection to his pressure bleeder, I think it was 10 p.s.i. max. I hope you find your springs, please let us know which part number and supplier was good.
