For a 67 SS, what type of clear coat (spray cans are all I can do) should I use to seal the spatter paint? I have a few cans of "satin", is this ok or should it be "flat"? I don't think it's gloss...

Use what you have. It's probably satin. Gloss would be to shinney. And I don't know if you could even find a flat.

Me thinks someone advised me that satin was correct.
Let me know how many cans you use. Took me 6 of splatter. Should be less of clear cote?