Greddy Air/fuel Gauge

[Sarumatix]

I got some GReddy gauges fitted and while fitting them, the mechanics found and rewired a sender unit for an air/fuel gauge. I presume the car had the gauge once (it has a gauge holder) but was taken during compliance or something. The box is sort of tan or beige with "GReddy Air/Fuel Data Link Sender" which looks similar to the pair of GReddy warning guages had installed for oil press and temp. On the back it has "NAF03960". Where would be a good place to ask about precisely which gauge belongs with that sender? I presume it is one of these: http://www.nolimitmotorsport.com/greddy/gauges.html but maybe it is something older?

[raz0r$harP.UK]

What does the sender unit look like? There are two versions - an old one and a new one, but I'm not sure if the old senders are compatible with the new gauges, and vice versa.

The old ones don't have a trigger for an external warning light (the new ones do), and the actual meter face itself looks slightly different.

Here's an example of an OLD one:

Here's a NEW one:

[Sarumatix]

Ohh cheers mate! yeah it's the second "new" one!