Try to get something from an engine of similar size to your 292. The H-W carbs are fine if you run more than one, but I think they're a little small to run just one on a 292. If you find a Rochester to use, make sure it's for a 292, not a 194 for example. You may have more luck finding a Ford 300 than a 292 Chevy at the salvage yards, not sure what the 300 used for a carb, but since it's of similar displacement, I would think its a possible alternative.
