ok, so assuming you have the wire up to the sensor, which it looks like you have (ones with the chunky black connectors on), the prices are:
temp sensors (both the same) £32.90 each
oil pressure sensor £92.80
I couldn't find any listing in the catalogue for the connectors to link the oranges in
yeah, they're called 'Triple Meter Hoods' and strictly speaking, they're model specific and only available for 4 cars, Integra, Lancer and 2 x Imprezas. They're all different prices, ranging from £99.85 to £222
that's for a posh 3 gauge cowl thing that sits on top of the dash.
Only other option I can see listed is a mounting clip (£8.25) and a little visor thingy that clips on top (£11.75)
Can't see any single gauge pod type affairs listed in the Defi stuff, but I imagine anything for mounting that size of gauge will do.
ok right.... another thing i need is the little plug that goes into the unit that powers the unit this is another thing that mr dunn left in the car when he brutally took it all out