In need of some dual exhaust headers

I have a 72 Scamp with the 225 slant six in it, I've got a 390CFM holley 4bbl I want to put on, and I have the intake already, but before I do this, I'm going to need some headers. Been looking around, and clifford ones are ~$350cdn and hooker ones are between $650 and $850cdn.

Anyone able to help a guy out? I'm not picky as to whether they're long or short tube headers. Also, I'll need some advice as to what to do for my rad, the current one I have is dying, should I rebuild it, or replace it with a bigger one?

Thanks!