I am getting another 300 for my 4x4 and was wondering if anyone has ever adapted a motorcraft 2bbl to one of these things like it would be a major upgrade over a 195cfm 1bbl! 300 cubes is alot of motor for 195 cfm. No wonder they peter out at 3500rpm. I am thinking tourque would increase through the operating range with a slightly larger carb. Also wondering about this. I have a carter YF with fresh rebuild and the engine I am getting also has one. I will have a extra intake since I am not having to turn in a core. What I am thinking about is having the intake milled flat on top cutting 2 holes in the intake log 1 infront of where the carb sat one behind it and fabing a billet plate to sit on top covering the original carb hole and alowing me to turn the 2 yf's sideways. Somthing like atached pic. Anyway run progresive linkage where the second carb kicks open at WOT. I figured remove the choke from second carb and disable the idle circuit. How good would it work? Seems like a cheap easy way to add a little kick to it without spending a fortune. I can rebuild the other YF for about $7. Any thoughts?