I'm sure I saw this post at one point but just can't find it again. besides the obvious, replacing X5 front seats with another X5, what other model and year of BMW will fit. Also, would it be a straight plug and play or would there be a lot of modifications to make them fit. I can get a great deal on older M3 Vader seat but I think there too wide.

Any help would be great since the seats have seen better days.