As you can see from the picture I have a divot at the bottom of my oil pan, it will not seal, leaks a lot, had not been a problem until now, had been using a washer with a rubber "o"ring in the middle built in. It's an 81 MK1 with a 5M-E Engine, not sure if a 4M-E block Oil Pan will work? Or if there is a "repair" for this problem? I had the same issue back in 1998 with an 85 MK2 I had and I was able to get a new oil pan from Toyota.