The presence of a Super Cobra Jet 428 is unrelated to whether the car in question came with ram air. In fact, CJs and SCJs could come with or without the cold-air induction. Instead, the SCJ was an automatic installation at the factory when either a 3.91 or 4.30 gear was specified. From the outside, the SCJ is nearly indistinguishable from the CJ, though a tip-off is the presence of the factory engine oil cooler. Experts also note some differences in the area of the harmonic balancer.