Originally posted by Captain Virgil Hilts 
As soon as I finish the resto on his 66 L-79 Corvette engine and trans, we're taking the Cobra to a couple of racecar builders to get quotes on having REAL headers built (I simply don't have the time to build a set, it'll be a nightmare). Then I'll swap heads and put on a 4 Weber 48IDA intake for him, and see if we can get all his power back and then some. 
 I've done bolth 289 and 427 headers for the A/C's along with replacing Spiral baffles in  Factory Side pipes .(Even the original headers didnt fit that well and were prone to cracking ) 
As for Header cost I'd ussually charge about 900-950 for custom fit Stainless .
(Steped ,clocked, and tuned )
 550-700  for Steel headers (plus coating)  , 1200 for original copys .