273 time to 'fish or cut bait'...

Toolmanmike & all,

I looked up the part number on my phone and got a link to a prior thread here on FABO and the guy said that the only difference between Commando heads and regular head is the valve springs? If this is true, I suppose that I want to make sure that I get the Commando springs., what ( & where) specifically do I find these? My machinist just calls the NAPA guy (I suppose, have I mentioned that I don't really like him?). It's time to get these parts on order, and installed.

Thanks,
65Cudafix