Weird question here. I purchased an original 69 B2 oil pan that did not have the drain plug. I went to use the one out of my repop pan and it was too small. I also tried an original from a 289 and it also was to small.Is the plug for an original B2 pan a general run of the mill plug or is it supposed to be larger? I’m suspecting the plug hole might have been stripped and then oversized. Thanks for any help
Craig