41 keihins or mikunies with upp intakes is more what you should be looking for. That should be a runner with A&S doing the work. If you get a degree wheel you can check to see what the port timings on the exhaust and the transfers are set at, most likely the transfers will be to high in a 4 mill configuration but its worth checking. Just keep it a 350 if it is and throw it on 41 mm carbs with alky timing at 8-10 depending on what your doing with it.