Comp Cams 901 springs

I was thinking about looking into isky cams. I've heard a lot of good about them. Right now I've got the 268H comp in my 360 runs out of steam right at around 5200. The 901 springs are mated with them, no problems so far. I think I remember these springs are compatible with everything up to magnum 270 by comp. Don't quote me on it though.