This is an EXPERIMENTAL design that has never been tested!!
This design has never been tested or installed on a vehicle so it may or may not work, and if it doesn't work, there are no returns or refunds.
Please review the drawing and pictures and make sure this will work in your application before purchasing.
The material is 6061-T6511.
See the drawing for detailed dimensions! Briefly: hole diameter for the thermostat is 1.5", like the head. The ports are 1/8 NPT. The thickness of the adapter is 0.485". The ports are 0.64" apart center to center.
The front surface has a machined finish, but the rear surface is unmachined, but is free from any pits or deep scratches and so should hold RTV well I think, or you could just sand or something.
The entire part was milled with a roughing bit so it does not have a smooth finish and has ridges in the z-axis. I dont think this really makes any difference functionally and you could probably dremel it smooth or something.
The demonstration fittings in the picture are rather large so I think pretty much anything would fit.
The fittings ARE NOT INCLUDED and are shown only for demonstration.
The only thing included is the aluminum spacer.
Price is $45 + s/h ($7 USA, $13 canada).
Or you can bid on the auction at:
Thermostat Spacer w Two 1 8 NPT Ports for 80's 90's Chrysler K Cars | eBay