Need tool recommendation for valve spring change with heads on (360)

I've used this tool. It says for 383-440 but it might work on a small block.
COMP Cams Shaft Mount Valve Spring Compressors 5324

I like WAY better than the more standard type listed above.

The small block one is different. It's this one...COMP Cams Shaft Mount Valve Spring Compressors 5323

Spacing on the hold downs is different. You can also make your own, it's pretty easy if you've got an old worn out rocker shaft laying around to use.

Anyway, way easier to use than the little screw type ones. If the valve springs are really stiff those little ones can be a pain.