[smallblockhead]

From my own experience: Bought ERA2062 in 2005, with a 331 and an original (optional) 2x4 setup with (2) 440 cfm Carter AFBs on a high rise Cobra manifold. Messed with it for 2 years, never could get it tuned right. Finally sold the set-up and bought an Edelbrock RPM Performer intake and a 600 cfm Holley double pumper, dyno-tuned the jets, and haven't touched it since. I have about 20K miles on the car, it is reasonably docile on the street, and runs like a scalded dog on the autocross course.