Here you all go.
Cliffs- Seats fit OK, but are uneven. It could probably be fixed if you really cared about it, but for the most part they are pretty much race seats as far as I'm concerned (comfort isn't an issue). Arguable whether its worth the weight savings or not, but I guess if that last 1/10th really matters! They do sit further forward than OEM, so tall people might have issues as well.
1987 Turbo cloth seats (swapped into my 91)
Drivers power seat- 67lbs
Passenger manual seat- 45 lbs
Total- 112lbs of seats
1996 Acura Integra GSR Cloth seats
Both manual- 34lbs each
Total- 68lbs of seats
Difference- 44lbs less weight
Install/Modification:
The seats are pretty straight forward as far as installing goes, but all 4 mounts points need to be modified to work properly. The front mounts are angled too sharply (close to a 90* angle) so they need to be straightened out to match the floor angle. A couple hammers do the job nicely. The outer rear mount is similar in its angle being wrong, but needs a little more attention. It's slightly short of the Supra's mounting hole, so you have to either extend the rail by hammering it out a bit, or you can drill out the mount holes a good bit to get the movement you need.
Last but certainly not least is the inner rear mount. This one needs a hacksaw. The Acura mount is flat and is highly reinforced. To get it to match the Supra mount point, you'll need to cut through the reinforcement to get it to bend enough. You'll also have to drill the hole out to get the bolts to line up. Once you're done fitting the seat to your liking, weld this so the seat doesn't bend the mount and drop the seat down.
Pictures!
General look of the seats:
Drivers seat full forward:
Full backwards:
Front mounts
Rear mounts
Inner rear mount cut
Side shot, showing seat level-ness and height
Pattern/texture on Passenger seat
Passenger seat overall look
Final thoughts-
While you can save some weight by swapping in these seats, it'll take considerable work to make them feel as good as the factory seats. As I had them installed, your knees are too high which makes clutch actuation a little tricky. Give it effort and it might be doable. Until I can get my hands on some factory Recaro seats, this will probably be good enough after I get it right.