rattymodelA The 305 is running a crane cam 210/216 duration with a 350 tranny. I had a 500 carter on it before I bored it .060 and the 600 really made a difference. The 9" ford rear end has high 2:76 gears which I'm leaving as a like to travel alot. I was thinking if I went with the dual carbs I would use progressive linkage and only run one carb and open the other at WOT.