carb info
 

im hoping someone can help me i have a 1964 1/2 K coupe which my uncle bought new and then my dad bought from him in 1970 my dad and i restored it back in 1986 same year i boought my new mustang GT anyways we had the motor rebuilt it was bored .30 over B&B it has a manley cam which specs are to the shelby GT350 R specs it still has the original intake(which was ported and polished along with the original hipo cast iron exhaust manifolds)and 435 cfm carb the car has a 4 speed with 4:11 posi rear it has the standard exhaust with the transverse muffler.my question is i would like to go with a bigger carb with mech secondaries and man choke this original car has the vacuum secondaries and tend to get stuck or dont always work right so any ideas suggestions would be great my dad wants to keep this basicaaly original and i want to go with the shelby intake exhaust and carb so maybe a happy medium will work with your suggestions this car has power but its still bottled up