Essentially yes, but you'd lose this and this which is about 90% of the mc28's reason for existing.
The HRC card works with the stock loom if you splice 3 wires (low oil, neutral and side stand down) to earth, you lose the sidestand light and with the HRC card the display can't show neutral or low oil anyway. In fact all the display shows with the HRC card is a massive temperature readout, which of course is all you want to know.
The conversion would be pretty major - loom, dash, CDI, ign barrel, fork yoke, flywheel.....
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