I know this site is geared to the 4x4 crowd but I need some input from people with experience and I know you guys are here. I am looking at a 91 Dolphin 22 footer. 3.0 engine and auto with o/d . The owner is firm on the $8200 price and it has abook of $9600. Its has 70,000 mi and is in very good shape, good tires, 2 awnings, generator etc. I have tested a few 4 cyl models but the were way under powered. This one seems to much peppier. Are these engines good ones and are there any down sides to this set-up?. Thanks for any info.