Online Radiator Catalogue?

Hi,

I'm looking at doing a watercooled conversion to one of my aircooled beasties and I need to find a radiator that will fit within a fairly limited space. There's enough room for a radiator I just need one with the right dimensions.

So my question is. Does anyone know where I can find an online radiator catalogue complete with radiator dimensions so I can find a radiator that will fit?

I'd prefer to use an off the shelf radiator to save cost instead of getting a custom unit made. And it would be good if the catalogue included Aussie made car radiators.

Thanks

Maybe I'll have to got the old fashioned route and go to a radiator shop and have a look at their paper catalogue.