The pan that got a hole bashed in it by the center link was a stock pan for a '67-up small block A body. When the engine bay was widened for the big block/hemi A cars they did not require the relief in the pan. The answer is to get an early A pan but since you are using a 360 that is out the window....the Early A pan does not work on a 360 block. I do not have a 360 in my '65 Valiant, I have a 318 out of a '87 5 TH Avenue. I am assuming the pan that was damaged is from that car. I'm sure there is an answer to what pan to use out there but I don't have it. I just wanted you, and anyone else doing this swap, to know that there could be that issue. I had no damage from the leak, I found it when the pan started to "weep" at that spot and bought a couple of replacement pans off of the internet. One is on the car as we speak and it never hurts to have a spare in reserve hanging on the shop wall.
Bob
Bob