Kore3 has a kit to adapt the C5 Corvette brakes to the stock spindles. You can buy the entire kit, or just the brackets and piece together your own... IIRC, the front kit is under $630 if you modify/use stock drum hubs ($930 for billet hubs, and can go higher with some options), but you will also likely need a new master cylinder...
For $630, you get instructions, brackets, hardware, braided hoses, rotors, calipers and pads...
http://www.kore3.com/proddetail.php?prod=10103-01