I got mine from Autozone for 5.99 (stant)
didn't pull anything off to change it...
drained coolant, pulled off Heater hose from Nipple next to thermostat, used long extension and universal to take out thermostat housing bolts, pulled thermo housing out with upper hose as a handle, cleraned things up, dropped in thermostat, rtv's gasket to housing, and a little on the bottom, and set housing back down with upper hose, torqued bolts, hooked heater hose back up and filled it up...
Do yourself a favor and buy plain generic aspirin...
take 1, and put the thermostat in boiling water to open it... pull it out with pliers, and hold the aspirin in the gap of the thermostat opening to hold it open... as it cools, it will clamp on the aspirin...
install it like that, and when you refill the cooling system, all the air comes out the top radiator hose... start it and top it off... as it runs for the first couple minutes, the aspirin will dissolve and the thermostat will close until it heats up!
97 Ram 1500 Club Cab
5.2 V8, Auto trans, APS valve body
M1 Intake, Large turtle
Crane PowerMax 2030 cam
MP lifters, MP 1.7 RR's
Brisk DOR17-LGS plugs
Relocated IAT, Modified/adjusted TPS
HiFlow air intake
PaceSetter Shorty Headers
3" Ultraflow exhaust
MP PCM, MSD 6-AL ignition
LeBra soft tonneau
92 Harley FXRS convertible - 95.4 RWHP!