I have a 1976 Marquis 17' runabout with a 140hp 4 cyl. Mercruiser I/O(181 ci.,?).<br /><br />I would like to completely rebuild the carb, however I know that there are many kits available and they are all particular to a specific year, model, etc. I want to make sure I get the proper kit! Any help from someone with a good knowledge in this area would be greatly appreciated. Also, where is a good source to find the kit on-line?<br /><br />Mercruiser engine block #4181831<br />Rochester, 2-jet, #7143184, 134 5 1, 7043990.<br /> 