Fitting Stack Water Temp Gauge

[The Baron]

Hi
I was wondering if anyone can help with a small problem we have fitting an aftermarket Water Temp Gauge?

We are fitting a STACK Water Temp Gauge to our 5 but are struggling to find an adaptor that will fit on the end of the Stack Sensor that then allows it to fit in the existing sensor housing in the engine?

This is the gauge
https://www.merlinmotorsport.co.uk/files/transfer/technical/doc/st31_instructions.pdf

It says is has a 1/2"NPT mounting nut or 3/8" BSPT?

Does anyone know anywhere that will sell the relevant adaptor we can fit on the end?

Picture below
https://lh3.googleusercontent.com/-f-vW34hYtQs/VD2AWH2jdfI/AAAAAAAAC3I/h27sL2ncOf4/w481-h642-no/FullSizeRender.jpg

[Dave Reed]

Personally I would remove the end plate on the head (opposite side to the water pump) and drill n tap that.

[Mattw]

morning mate I think I got my adaptor from this site.
http://www.demon-tweeks.co.uk/motorsport/gauge-pipes-adaptors

[Trevhib]

http://www.thinkauto.com/

[The Baron]

Thanks all for your help :)

[j4ck-dw]

alright mate ive got the exact same problem with the same gauge how did you get round it cheers