Yep, its a 94 LS. And no, I had to cut the old plugs from the old seats and splice them to the new seats. Wasnt that difficult really, I had all the wire diagrams.
Also had to make some custom brackets to hold the seats in, but really nothing hard. If I knew it was going to be so (relatively) easy, I would've done it years ago.
Hey man idk if your still on this sight but I was wondering if you had anymore of those pictures of your ls430 seat swapped ls400 Im thinking of doing mine soon