I guess that I should have been a little more specific. It is a solid lifter '56 235. I am trying to do a low budget refresh on an engine that has an aftermarket 264 degree cam and solid lifters in it but the previous owner wanted to keep the head to put on a 261 build. I was hoping that there might be some more common (cheaper) dual valve springs that might fit with a minimum of machine work.

The 455 springs might be a good answer Tony P. Thanks