Anybody know what size the top nut on the lower engine (trans) mount is? I don't have a complete set of metric wrenches, and there isn't room to get a socket up there. My garage has much more experience on American classics that laugh at the thought of metric tools. It appears to be between 9/16 and 5/8. Maybe a 15mm? That's what my calculator thinks it might be. I figured out the bottom one, which looks to be the bolt, is a half inch and the front, on the smaller bushing, is a 13mm. Anybody do this recently and remember? Am I missing or incorrect on anything? Thanks in advance.