i have a good company that can make just about any spec rad, any size, any inlet/outlet for a very reasonable price. They are based in cambridge, did my drag cars rad for £240 all in, would've been cheaper as i supplied the -20 weld on fittings but i was more than happy with what they'd done so paid them the full amount.
work was spot on, done in the exact time they said it would be and were very easy/good to deal with.
http://ali-fab.com/index.htm