6190 Holley carb

What’s the best rebuild kit for the 6190 holly carburetor, And where should I get it from? The last couple times I’ve gotten stuff at the local auto parts store it’s not the right item I need. Is it better to order the carb kit online somewhere? I’ve noticed that it’s not a carb number that they list, The kit must work for 10 other different carburetors.. Also, isn’t this a 650 vacuum secondary carb?
your opinions??!