Chris,
How about Red's Headers
http://www.reds-headers.net/
Intake - Model A Riley Super Dual
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Intake - Model A Riley Super Dual
$245.00
Port openings 1-1/2" - can be opened to 1-3/4"
Comes with bell crank for throttle linkage.
He was in Thousand Palms in the Coachella Valley but it looks like he moved to Chiriaco Summit east of Indio.
What about Miller Hi-Speed. They are in either Oxnard or Ventura.
There are also a lot of Hot Rod shops that could probably build you something.
David Serrano