To be honest, I'd want the GPS in place. The PGM-III is actually incredibly intelligent for a system designed almost 35 years ago, and absolutely does adjust a lot depending on which gear you are in. It's far more sophisticated than just TPS/GPS/RPM too, so if you can source on, I would definitely replace it.

There's one on Yahoo! Auctions right now.

https://www.jauce.com/auction/j1051650153
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Andy.
NSR-WORLD.COM

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