Crowd sourcing sounds too trendy. Can you consider brain storming an idea instead?
Section needs rules!
One I want,
[state] as start of title.
Eg
[sa]sick as r31 locked diff skidzzzz
You can get wideband sensors without gauges, eg zeitronix zt3, check their site
The haltech would need to be setup to do something with the wideband input
Adaptor would be difficult as commodore brake mounting points are a long way from outer edge of disc, if that makes sense. Normally an adaptor would move the Mount holes outwards, away from hub. I think in the case of putting commodore calipers it would be the opposite, and could get weird.
The traction control system sucks hard, and just slams the throttle shut. Disabling it is a smart thing to do.
Making it work again is a waste of time.
Get better tyres, drive better.
How much power is it making?