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I just purchased what I think is a 91 Mariah Diablo 4.3L 18' two weeks ago. It is a little rough and needs some TLC, But everything works and it runs pretty good. I have spent most of my time cleaning her up and fixing little things. I was wonder what this type of boat sold for in 91 and what it might be worth today. Thats all for now but I am shure I will have plenty of questions later. Thanks

welcome aboard! I pretty much spent every waking minute with my Mariah when I first bought it, which was also my first boat. There are some really experienced boaters on the board that can answer most questions, so fire away!

Hi JM. Welcome aboard the Mariah Owners Club! With a little elbow grease, these boats scrub up quite nicely. Mr Clean Magic Erasers work wonders on the interior vinyl and hard surfaces while Meguiars 3 step clean & polish products will bring the exterior shine back.

As for the boat, the last two digits of your vin# will confirm the model year of the boat. Also, we do have a '91 brochure available to our contributing members so as a Silver Contributor you should have access to this area of the board.

As for the present value, you can check the NADA guides here: http://www.nadaguides.com/default.as...MR&gtc=MR&ml=M