Good news everybody, I fixed the MOMO Leds plugin from Kegetys to support the Z28 release. I was getting fed up not being able to see my upshift LED flashing so I dug a little and here's the result. Initial credit goes to Kegetys of course!
One weird thing while working with the struct provided in the inSim.txt for outGauge; when I copy the exact same layout it doesn't align properly. It creates a 16 bit gap between the unsigned DashLight value and the float above. I just put a 'Filler' 16 bit between the two to fix this issue, so this might need another patch in the future. But for now, it works!