Radiator help!

[B2Mann]

I think that the radiator in my B2 isnt efficient enough. Its aluminum and single core. Ive tried the duel core out of an explorer and didnt help much. It normally runs at a correct temp, but id like it to be cooler. Has 180 thermostat. I was wondering if anyone may have swapped a wider radiator into there B2, something with maybe a little more surface area. I know the Merkur Scorpio has the same motor, but uses a wider duel core radiator? Any advise would be greatly appreciated.