I have a 71 amx 401 4spd . The car competes mostly in the stock class. I just replaced the original intake with a NOS R4B . I am contemplating using the group 19 carb(3160) I like the Idea of all AMC parts offerings. No one seems to know much about these carbs. I know they are rated at 950 cfm. Would this be to radical for a street car? I do have 4.10s but am considering 3.73 0r 3.54s. I dont think this carb has a pcv tube,were would you connect it? If you are supposed to use the old phenolic spacer with pcv provision then why did Edelbrock notch the manifold? Lastly if I go with a regular Holley what is better a 750 double pumper or a 3310 vac secondary? Thanks Bob