After searching the internet some more, it looks like all the tags identify is where it was made and for what industry. So, in your case tsx says it is an agricultural carb and the numbers 159 and 422 are code for the different locations where each were made at. If your concern is stepping down in cfm you are already doing that if you have a true original wd manifold from a 201 engine on a 226 wd45 engine. The wd manifold originally had smaller ports than the wd45 manifold. A new replacement today for a wd today is now the larger ported manifold used on wd45's.
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Today's Featured Article - Talk of the Town: Can You Patch a Tire Sidewall? - by Staff. Another neat discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "Has anyone attempted (or succesfully) glued or bolted a patch to the tires' sidewall. I cannot afford a tire right now but have some horse stall mat material and could buy some glue. I could use some advice on
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