From Dennis "Mad Dog" Antenucci himself comes the following: 

Shirley Design - Jim Shirley Huntington Beach (714-897-1641)

Jim was the guy who fixed my intake that the polishing shop in Buena Park f'd up. . .He does it all; welding repairs, custom intakes, headers, exhausts, and lots of off road and race work.....Jim is a real craftsman and for what he charges I don't see how he pays the rent on his shop.....his shop rates are hellva deal......all you need to know is he's good, honest and also does mig-tig-heli-arc and he is a guy who has done work for me at the last minute and even waited until 6pm one night for me becuase I got caught in SoCal rush hour traffic.

Another vendor who carries the 

Team Pantera Racing Seal of Approval