Hello, I noticied a hissing noise from my radiator the other day when I got home from work. Allthough no fluid was leaking I am assuming this is a sign of things to come. My car is a 98 328 convertible with 102K miles.

I was wondering how difficult it is to replace the radiator. I also heard about the aluminum replacement to the OEM plastic unit. Does anyone know where I can buy such a beast?

Thanks,

Kevin