Hey guys... ... ... ... '93 D350; nearly 200K miles. Radiator started seeping a little a couple of years ago; didn't want to deal with it, so dumped some stop-leak in and continued to use it. Last week, a seam separated and rather than have local shop fix it (it needed the tanks taken off and the flues rodded out), I bought a new one (Radiator World, EXACT FIT, $236. 00 delivered to my front door in 2 days) and installed it over the week-end. The thermostat had stuck open... ..... from the stop-leak, I suppose; only place open was AutoZone; with their thermostat, the gauge has a constant (about) 40 degree swing. Local Dodge dealer wants $47. 76 plus tax for the Cummins thermostat. Unable to find an on-line source; can you help me out? Thanks... ... .....