Two minor probs, but can be overcome.
1:The NSR electrics from 1989 and later ran a throttle position sensor.
I took the one on my Aprilia RS250 and epoxied it to run at WOT only because I run 38mm carbs, resulting in a rather unrideable power delivery. I have since Mickey Moused it back in. Massive improvement in power delivery

2:Dumping the power generating circuit means that you will have to run a battery. More weight, but less drag on the crank(=more power going to gearbox/tyres).
And you get to choose where the battery goes in.
Ask people about Total Loss electrics for more info.

The other-and better option, is to use NSR HRC F3 electrics (rare as hens teeth) or HRC RS250 electrics from 1989 to '92 (A little more common...)
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The Chopster