I did an upgrade on a 1999 model. High compression pistons, preformance cams and power commander ECU. Made a big difference. I had cylinders off reparing an oil leak so the labor was pretty much a wash, otherwise I don't think the preformance increase would be cost effective. I'm happy with the upgrade
My old pistons and cams are for sale. They have 12000 miles on them and are in great shape.
1999 V92C ser #480 Red/Black
High Compression Pistons, Preformance Cams, Power Commander, Overdrive Sprocket, Slash Cut Pipes, K&N Filter, Cibie Headlight, Headlight relays from Eastern Beaver, Hella 80/100 watt H4 bulb
Factory Windshield, Corbin seat, leather saddle bags, Lindby Highway bars,