22-inch Replacement Rad. for six cyl.?

An aluminum radiator will likely cool much better, whether 19" or 22", though I think you might only find them in 22". You will need a 1/2"D outlet at the bottom R side (recall) and slants had a canted outlet, though you can make a straight one work. I think you can find them new for <$150 on ebay or Amazon.