I got a hold of a spare upper cylinder spark plug coil, and installed the lower cylinder plug cap on it. The upper coil has a longer wire. A new coil is around 2200 yen.

You can use the stock NSR plugs, but you will have to trim the plastic a tad. No clearance issues with the tire for me.
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Paul Herr
'88 FZR4/GSXR/YZF Frankenbike
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