I got the new Magnum 318 all straightened out in my 78 Fury. It's a stock 95 long block with a mild Summit cam (K6900), dual plane M1, headers, 2.5" duals with h-pipe, 3.55SG. I am up in the air between 2 different carbs. I'm currently running a box stock 1406 Edelbrock on it. I also have a freshly rebuilt Holley 1850 that I can use. My question is, which one offers more tuneability for the average person? I want to tune for mpg with either carb, but the idea of rods being $12 a pair, and jets $10 a pair kinda push me away from the Edelbrock. I have a Mopar Performance Holley jet kit (64-99), and I'm thinking about that little 1850. I tried to search, but all I found was personal preference. The only advantage I see the 1406 having over the 1850 is the use of secondary jets, instead of a metering plate. Anybody have any actual experience tuning both? Which one is better when tuned correctly? I don't have a wideband yet, but is in the cards for a later date. What are the actual pros and cons of each based on PERSONAL experience....not hearsay