Anybody knows the chain stay length for the 60s~70s? Bottom bracket drop?

I'm not going to have the chance to try one before I get it. Hopefully I won't have to play catch and release with this. If anybody has a 21"-22" 60s~70s P10-15 for sale, even if just the frame/fork/headset, I'm all ears. Paint can be chewy but I care for clean chrome.