I asked about the interchange over on benzworld and was told that they should interchange between 86-93, I've read other places about there being a different setup for 1989-90 models but was essentially told that any early style should fit. I guess I should just do a P/N search but my seat is stuck all the way down and back so I was trying to avoid that route until it came time for replacement, but it is what it is I suppose. Thanks for the info.