They may still be on back order, so it may be who ever has a set in stock. Jegs and summit usally has good prices on them, I have heard of people mention a few local speed shops who can get them.
'93 T/A 398" l 24X l M6 l 12 Bolt
'07 C6 Z51 M6 - Cam & Blower 623RWHP/576RWTQ
'12 F-150 Lariat S-Crew 5.0