Radiator Problem!

[Wild LX-i]

I recently found out that I have a hairline fracture in my radiator, right below the cap.
I was wondering about an aluminum radiator for my '88 LX-i....I wanted to know how well do they perform? Or should I go back to a stock radiator.

Whoever knows about cooling systems get back to me asap!

[BITESIZE]

I HAD THE SAME PROBLEM. ALUMINUM RADIATORS ARE COSTYM LIKE $300 OR SO. A NEW STOCK ONE IS ABOUT $100.