doug thorley headers
Doug's D4477, These have 6.1 and late 5.7 flanges
Hooker 5020-1HKR, These have early 5.7 flanges
I haven't installed either, but they are nearly identical, except for the flanges.
I got the Doug's because they were $375 shipped on eBay, $300 cheaper than the hooker headers I already had.
The seller still has some, price has gone up, and they don't look like the one's I got.
http://www.ebay.com/itm/Dougs-Heade...r_Truck_Parts_Accessories&hash=item3f359953ef