Looks quite different than Jeff's - Is it possible that your radiator may not be from a Maverick - Mustang perhaps?
I was thinking rthomas771 radiator kind of looked like a mustang radiator. I just found somebody on local craigslist selling their 6cyl 70 mav radiator here is a pic looks like mine
The '70 Mustang with 302 uses same radiator as 302 Mav which AFAIK is same as 250(there are different radiators with/without AC & HD cooling)... Also be aware the 250 radiator has larger inlet/outlet than the 200... The one in my 200 '71 parts car was curved...
I have a radiator here that was out of a 72 6 cylinder. The upper tank is different than the ones shown here ... it projects out, squared off at the ends, and it has a curved notch that looks to be for fan clearance. The upper outlet is 1.5 inches. It has the auto trans cooler built in too. If this could help you out, PM me. The price is cheap. Previous owner said it worked fine, but it has some scale inside, and I would boil it out prior to use. I believe the car it came out of was A/C, but not sure.