I have a 350 but I am assuming that the original owner in 69 had the dealer install a 4bbl intake & Q Jet carb as the numbers on both are correct for 1969. For this reason many people mistake it for a 350 HO as standard 350 only had a 2bbl. The RPM was put on by the guy I bought the car from and I have the receipt where he purchased it from AMES. I am lucky he kept the original intake and gave it to me with the car.