I'm guessing I should have the newer ones, I bought mine in 2013. Even with a stock 2x4 intake and stock air cleaner, I have at most only 1/2" hood clearance.

1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip, (JA5) Silver Frost Metallic 1973 Challenger Rallye 340 1985 W150 Power Ram prospector 1986 Camaro IROC-Z 305 tpi