I use a Canton 15-660 7 quart oil pan on my 65' with a 351w. Fits great and no issues. I can R&R the motor each year with it installed. Same depth as the factory pan only with only a wider sump.
I use the stock dipstick in the timing chain cover and blocked off the one that cam with the pan. Be sure to order the pickup too and check it against the bottom of the pan. They usually require a little tweaking.