I'm considering replacing the carb in my '81 Avanti. Not looking to tear the road up, but want good performance. Will the classic Holley be a good choice? There is a 350 cid stroker engine in the car. Is this a simple install to switch the existing carb with the Classic Holley? Can I get some feedback? My car is not idling well. I have to warm it up for about 7-10 minutes and race it to get the idle to hold. Even then, there's hesitation. When I park & restart, I have to pump the gas 2-4 times to start it again. I'm thinking a vacuum and or a carb issue.