[427sharpe]

Blue Thunder makes the dual quad intake. They took the 428 dual intake and recast the outer flanges to the 429 size. They also left enough room for porting to get them out to the CJ size. Since it was originally based on the 428 intake, the oe Ford linkages and air cleaners will work just fine. This intake had a strong reputation, and Blue Thunder definitely has their act together so I would trust their work in a heartbeat. I don't know if it is still in production, but a quick Google on Blue Thunder will get you to their site, which is not state of the art, but at least has their phone number!