Oil filter mounting point

I want to fit an oil pressure and an oil temp' gauge to my FL1 with the 1.8 petrol motor. I see that the oil filter mount has a take off point for the oil light switch. If I fit a T adaptor I can mount the sensors for the existing oil pressure light switch and my oil pressure gauge. But where to Fit my oil temp' sensor?



On the very left of this image is where the OE sensor screws into. However there appear to be two [possibly threaded] holes on the neck just to the left of where the oil filter canister screws on. I guess they are plugged or blanked off at casting. Could these be used to thread in a sensor/ probe for oil temp'?

Advice please.

You could use the filter housing from an MGF, these have an oil temperature gauge as standard. Alternatively you can drill and tap a thread into the blank on the housing you have already.

Common practice to fit a "T" into the oil pressure port for the pressure gauge and still retain the sensor as well. Just make sure that you get the correct thread on the tee to fit into the existing port as these come with differing thread patterns.
On Er indoors Vectra, the oil temperature gauge is fitted to the thick, cast, alloy sump, which makes sense.