I still have that Stant 205 degree thermostat,
but unfortunately it is in a garage
about 1100 miles away right now.



I found the Stant 205 degree F by looking in the Stant part number book in a Napa store back in 1999.

With so many cars running 203 degree F thermostats now (2004+ Hemi 5.7V8)
there are probably more options today.

I think I also have a
Robertshaw/Siebe Model 330
'high performance balanced flow' style thermostat in 205 as well

http://www.flowkooler.com/thermos.php?FKSID=d7449f668762853a549d5cc497b43c1f

and that one almost certainly would fit the older style Mopar water neck.

To make a Model 330 thermostat fit in the Magnum v8 water neck you have to grind the opening larger by at least an eighth of an inch....about a 15 minute job with a Dremel tool with a rag stuffed down in the water neck to catch filings.