Ok, I have rebuilt 56 292, which is fully rebuilt and am wanting to change the carb set up from a 2 barrel to a tri power set up. my question is and just want to get everyone's opinion if it is worth buying or if I should just go with a 4 barrel. I am lookin to get a little more horsepower out of the engine without going crazy on the engine. also what do you think the horsepower difference would be between the both (if anyone can estimate)? Thanks