i HAVE A 79 EL CAMINO, REPLACED THE ENGINE A COUPLE YRS AGO, I'm not sure what yr the new engine is. I believe it's a 350. Heres the problem, beforeit got fixed i gave the old carb away. the mechanic was able to use the carb off the newer engine, even though it's computerized and my veh is not. I can't pass emission's for ****. I've found holly II at checker for around $180, do i match the carb up to my engine, or to my veh yr, make and model?? I beleive the holly part i'm looking at is 647160. would this the be the correct carb for my veh?? Emissions said running too rich, some of the computerized sensors are not connected on the carb thats in the engine now.