drum resurface or buy

I've seen .060 in Chrysler Factory Service Manuals for these cars and I've seen .090 stamped on drums. I take the .090 as the outside limit. The set of rear drums I took off my 69 Barracuda recently were at .125 over. You just never know what you're going to find on these cars. People just patched them up to keep them on the road. Yes, the Barracuda is getting new drums as part of its restoration and new Scarebird disc brakes up front.