OK...just FYI, you CAN swap the fuel guage out of the HO to your renix...but it takes a little modification....sooooo this might have to be moved to the mod thread. Unfortunately I didn't get any pics of the process, but its pretty straight forward.
Step 1...Lets not avoid the obvious and get the gauge from a HO vehicle.
2. After you remove the cluster in your dash, unscrew the tach, fuel gauge, and the little circuit board located directly underneath the tach.
3. Remove the little gauge light (will be in the way of the circuit board for the new fuel gauge), and break off the little barrier wall enough so the circuit board from the new gauge will fit across.
4. Break out the solder gun, exacto knife, and 3 pieces of wire about 6" in length. If you look on the new and old circuit boards, you will see where in says acc, ground, and unit on each. With your exacto knife, CAREFULLY scrape off the plastic from the copper leads on the back of the gauge unit to each of these leads, and solder the wires to the copper (It attaches just fine, but I put a tad bit of super glue over the connection just to be sure...since im not the most graceful person).
5. On the new fuel gauge, attach the other end of the wires to the corresponding whole. I just rethreaded the screws into the board and wrapped the wire around it before snugging it down.
6. Screw the new fuel gauge back in (it fits into the existing holes perfectly).
7. Reinstall the tachometer
8. Put the cluster back into your vehicle, hook it up...and VOILA!!! The fuel gauge now reads correctly for fuel pumps from HO vehicles 91-96'.
Not that anyone will need this, but just in case someone makes the same mistake I did there you have it.
cheers