I ordered mine through Billy Utley (72NovaDriver) @ B&B Classics who is a sponsor here. Dan@Holohans Hot Rod Shop is a dealer as well I believe.
Autorad setups are not inexpensive but they are super nice. Once you price out a radiator, fans, and a new core support, their stuff isn't really as far out there as it seems initially. You also get more cooling area exposed than you could with most any factory style support without a lot of mods. Anyway, yeah I'm a fan of their Peachtree State fab'd goodness
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John