Here's a thread with a pic -
http://67-72chevytrucks.com/vboard/s...Rosette+rivets. They look like a star or flower instead of round. So it sounds like your frame is an original SWB since there aren't cuts near the center, probably just got banged up in an accident. The No Limit rear frame kit would be awesome, they definitely make great stuff, and the tweaked frame gives you a good reason to jump on it! I know how it goes with limited funds tho. Glad to hear you're making progress with getting ready to take the bed off!