Good morning, Tahoe Healey, I managed to straighten out the flange on my oil pan years ago. Don't remember too much about process, but was careful and took my time using straight, flat surfaces to tap. Additionally, I had a small crack in the pan (previous owner evidently hit something....) sealed effectively by brazing. It has held since 1971.. I think the main features of the alloy pan are: attractiveness, cooling fins (if I recall properly) and reduced engine noise. I don't think this is worth $400 - unless you have a few extra bucks just burning a hole in your pocket. Also, there are some companies around that deal in used Healey parts - probably have sump pans available there. I solved my oil pan leak problem by straightening the flange and coating both sides of a new gasket with high quality gasket sealant. Worked also with the very troublesome lifter side plate gasket, too. Good luck. Steve