Hello, I have a 66 C20 with the 250 and monojet from a 68. It's fairly gutless in my opinion unless i keep the RPM's above 2 grand. Since I can't afford the Clifford set up,I wonder if Chevy ever made a 2 barrel manifold? Is it compatible with mine, and what models and years did it come on? What sort of gain might I get from such a swap? Thanks, Josh
