I am toying with obtaining one of these for my 350 I am installing in my 86 C-10. I am trying to build a gas economical fun to drive truck with economy in mind. I will have a final drive of 1.9 through the New Process 4 speed Overdrive stick with the 2.73 rear end. The cam in the engine is designed for towing and should give ample torque to pull it. The engine came out of a Suburban I bought and parted out that really ran great, seemed to have a ton of power even with the 3.08 in it. I may find out I need a lower gear, 3.08 (2.2) or 3.42 (2.4). If I can keep the rpm down without lugging it gas mileage should be decent. I get 15-16 with my 454 with my 3.21 gears and tall tires, seems to almost idle going down the highway. If I actually find one I will post in the projects. I have the 91 page Fish manual, so....just need to find a Carb suitable for a 350...