> Hello Gang; > I seem to remember that the cross ram or dual induction, as I have also > heard it called perhaps incorrectly, was available with any big block RB > engine from a 361 to a 413. It was also available on in Plymouths, Dodges, > and Chryslers, stock in some models and as an option on others. Yes, rams were factory installed on 361, 383, and 413s. There is a factory correct 361 SonoRamic Plymouth (1960), photos and write up at www.simplexco.com/auto . Dodge and DeSoto also offered the option. The only cars produced with rams were standard equipment were the 1960 Chrysler 300F, 1961 Chrysler 300G, and 1963 Chrysler 300J. One indication that a car left the factory with rams: the front inner fenders will have sections cut out and filler plates installed. Chrysler needed the cut outs on the inner fenders to give clearance to the rams -- On the assembly line, the engine was put in the frame with the rams already installed and then the front clip was lowered. Because the rams stick out so far side to side, the standard inner fenders can't be lowered down over the engine assembly. Bob Merritt