Just thought I would post on here that I picked up a 1988 Invader for this summer. It is an 18 ft bowrider, I/O with the 5.7L mercrusier and an Alpha One drive. It appears to be all original and well taken care of as a complete removal of the interior revealed no major problems at all. I'm definitly happy to have it, but, like everyone else here, have been unable to find much info. I do have an original Invader booklet that came with the boat, but it is only a collection of boating saftey and rules and whatnot, I would consider it a "basics of boating" booklet. <br /><br />I also have what appear to be all of the original manuals to go with the mercrusier engine, the alpha one drive, and a description of quicksilver products which can be used with the boat. These seem to be basic enough, but they are all the original manuals as they are all dated from 1987 or earlier.<br /><br />Unfortunately there is no real information about the boat. The bill of sale has it listed as a 1988 Invader V181 Sport with the first three letters of the HID being MWK.<br /><br />Anything more I learn I'll try to post