22-inch Replacement Rad. for six cyl.?

Well I found a third source (in Canada) - the Wrench Monkey - for the Spectra unit and, like Avatar, only $218. I even went thru ordering process but, alas, 3 days later, I get notified that this unit is discontinued. (sigh). So back to other options. Of course not a panic as this is beginning of fall and not spring - so I have six or seven months to ponder my choices. p.s. R.A. lists three aluminum Liland-Global units but all 'out of stock'. For those wondering, it is a '69 Signet with 3.7 L. and auto trans.