HEllo my plans are simply this seeing as how i cant find a reasonable tripower manifold and carbs i want to invent such as on this one post i saw where holes were cut in the log and flanges welded on. which carbs, or carb would best fit a 200 inline six ported, .040 pistons, and a 264/274 Clay smith cam.?? i was wondering if brazing works on cast iron. which rod is necesarry? branze?with nickel?