Temp gauge?

Where is everyone running temp gauge sending unit from? I have been told just drill a hole but I have already ran the motor for a few minutes and don't want to have to drain it all down because of metal shavings. Any ideas? 03 5.7 hemi with aftermarket gauges

Can you adjust the aftermarket gauges to different temperature sending units?

Does your water pump have a NPT air-bleed plug on the very front?

I'm not sure about adjusting the gauges. We installed them two years ago and I doubt I kept instructions. I will see if I can down load them

I don't recall seeing and not air bleed but I will check. Thanks for the ideas!