Hi all, this is my first post here. I have been lurking for quite some time, and finally signed up.<br /><br />My question is about these early Mercruiser tunnel ram looking EFI systems. They look somewhat similar to a Chevy TPI. I am not sure about the year ranges of these systems, but the one in question is from a 1989 boat with a 350. I could buy this system for my carbureted 5.7 1995 mirage for about $200 bucks, just not sure if these things are any good? All the while I have been lurking, I have heard nothing about these older systems. Can anyone just tell me some general stuff about them Compatable with my later 5.7? much increase in hp? reliability? <br /><br />Thanks for your help.