The seller LKQ would be my last resort. I had an unhappy experience with them as have 88 others who left negative FB:
http://toolhaus.org/cgi-bin/negs?User=%09hpap&Dirn=Received+by
As was said previously, seats from a '94 or '95 late 124 E series would be great! I would worry about the electric seat portion of anything else actually working properly, there might be a difference you can't see or measure witha tape measure.
I like your pic BTW!
EDIT - two things since my initial post.
1) LKQ is up to 113 Negative feedbacks, seems like they are on a roll
2) RE; Seat compatibility. Ha! I should have followed my own post! Duuuuh!
The later model seats in a 124, starting about 1990 when the back panels are pleated material instead of the black elastic string mesh are NOT interchangeable because the electric cables are different!
The earlier seats use a 12 pin plug and a smaller plug, later models use three different plugs, so I found out today
after hopes the nice seats I bought yesterday would replace the existing seat w/ a worn bolster.
I spent a hour cleaning the carpet area under the seat and transferring some plastic trims parts THEN I put the seat in the cart and discovered the plugs were different. Damn! then I went to take it out and gashed the B pillar in the process because I didn't remove my steering wheel.
I guess I can swap the seat coverings over and I am not inclined to mess with that until it warms up a bit. Oh well, maybe this will save someone else all the crap I just went thru! Check the electrical stuff under the seats b4 attempting a seat swap within the 124 series (other seats may also have the same differences!)