I have 2 stock 305's that each get 5-6 thousand miles per year. Any good shop can rebuild a Stromberg properly. Is in fact a far better carb than the Holley 500. Carbking is a member here. And has said the same thing here. And on other forums. The Old Buick and Pontiac guys love the factory installed ww Carbs. I still buy my kits at Napa. About 20 bucks. Bush the throttle. It's about 5 bucks for the bushings. And my old gmc trucks start up like they have fuel injection. I just don't see the point in modified parts that have no gains if all conditions are equal. Plus it usually sets a guy back 2-300 bucks to loose low end torque. This is the same mentality that folks have about the quadrajet. Throw an excellent carb away and put a Chinese copy of an afb. Makes no sense.