Looks like I’m going with Spectra CU1696. This is the radiator for 7.4L, with engine and trans oil coolers, Exc. 15,000 GVWR (3500HD). As far as the brackets are concerned, the ones I saw yesterday in the junkyard are the same ones on my truck. They sit slightly below flush to the top of the radiator support. The ones I need stand about 2” taller than the top. I should also clarify for the future. The “short” brackets are currently still available under p/n 15574275 & 15574276. The “tall” brackets p/n 15678761 & 15678762 have been discontinued. So the hunt continues.