good morning,<br />we have been searching for our 1st boat (we are first time boaters) at the brokerage places, on the internet, and in the classifieds for awhile now and seem to like the bayliner 2859 classic hardtop.<br />the (2005) new ones come with either a 7.4 bravo ii mercruiser or a 4.2 mercruiser diesel.<br />the used ones we have been seeing have various engines: some have the 7.4 bravo ii, but some come with the 5.7 bravo i, some have a 5.7 bravo ii. what is the difference between the bravo i and ii? and what will be the differences in performance and fuel economy between the 7.4L and 5.7 L engines.<br />the bayliner 2859 hardtop is 27' 9" long with a 9'9" beam and weighs 7500-7600 pounds. we will be doing most of our boating on lake erie.<br />thanks in advance for your response, sharlove