Replacement thermostat for Robertshaw 370-180

I checked their site again using your link and the only ones they list are 330 & 332 series, if your looking at the 330-180 for 22.99 its listed for GM, AMC & Cadillacs after 1968 as well as the rest of the 330 & 332 series. I typed in 370-180 and nothing comes up on their site. What part number are you referring to?