Just curious if anyone else has done this. Using (essentially) '88 Camaro TPI on the truck, and both a '91 Camaro and '91 454 3+3 use 3 wire senders/switches. However, those units aren't interchangeable, and I can't figure out why. Just looking for ideas/info on this, trying to figure out the best route. Would hate to buy one and have it not work, but with both being fuel injected V8's from the same year, you'd THINK they would be the same part!