1987 300D Transmission Filter Kit Questions

[Ken300D]

I have ordered transmission filter kits from two different places now, and both have sent me the "wrong" filter kit. The transmission filter itself is fine, but the gasket is the wrong shape. When I took off the pan, I thought "Hey, this is the same pan that is on my 1982 300D."

So I did some checking on Fastlane. The filter kit for the 1982 300D also fits the 1987 300E (yes, the E model). According to FastLane, the "proper" filter kit for the 1987 300D also fits the 1990 through 1993 series 300D.

To describe further, the transmission pan gasket on both my '82 and '87 is the same width front and back halves (symmetrical). The gasket they're sending me is narrower on one side (not sure if it would be the front or the back.)

So, I wonder if a 300E transmission got put in the car? Or if some of these parts places are sending out the wrong part? I did check Performance Products and they show the same filter kit for both the '82 and '87.

Any comments on these transmission filter kits? Any troubles in getting the right gasket?

Ken300D(s)