Aftermarket gauges

Mike69cuda said
You might look for a spacer like this that goes on top of the block. The thermostat sits on top of it so your sensor is on the engine side.

Google thermostat spacer with sensor port.

View attachment 1715637042

Make sure that you get the measurements if going this route. Everything I looked into had the smaller thermostat hole and seemed to designed for the GM guys. I ended up getting mine from Hughes Engines. Called and confirmed big thermostat. Part number AR438.