I have an 02 GTI, purple right? They have a 717 engine which many will say is underpowered for the bigger hull, and it is, but still enough power to be enjoyable. They have some type of noise suppression, It surprised me when I test drove mine, it was so quiet, in the water anyways. Louder on land. 717’s are a reliable engine, my favourite engine because of this and there simplicity. WHAT TO LOOK FOR Firstly 4000.00 for 2 and a double is a fair price but at that price you should be allowed to water test them, a lot of issues won’t show themselves unless the machine is in the water.. so if your there cash in hand, your happy with the machines, willing to make the purchase, even put a small 50.00 deposit and the seller won’t let you water test them, I would walk away for 4000.00. These machines are very stable, I am 225 pounds and can stand with both feet in one foot well without it tipping. When water testing, look for ease of starting in the water, should just be able to pull the choke and start in a second or 2 max. First, take a 1 minute ride with the seat off to look for any leaks, after putting the seat back on, take for a 10 minute ride minimum, longer if allowed. At the end of the ride, shut it off and try to start it again while it’s still in the water, should start right back up, if it doesn’t it can be a sign of a worn rotary valve cover or even low compression. After the ride, take a compression test 120 is time for rebuild, 150 is new. The oil tanks have a seam at middle height which normally leak and need replaced with a seamless tank, if there is oil in the hull it could be from here or the grommets on the bottom of the oil tank tend to leak as well, if the small oil lines coming from the carb to the intake have white thick paint on them that is flaking off then they are original and should be changed, if the fuel lines are grey then they should be changed as well.. mine came with the OPAS flaps on the hull removed with no issue. I think it was fairly common for people to remove them, might as well operate the reverse bucket while in the water as well. I would think the 02 and newer GTI’s would have a better resale value than older hull design 3 seaters. Also while you are riding look that the pisser is working, a small stream of water should be coming from it, can’t remember exactly where, I think out the port side under the rub rail but I could be wrong. Anyways you can see it by looking around while driving. Make sure it has the original fuel filter/seperator, original air intake which I’m sure it will have. Not molested. 2 beeps when you put the key on says the beeper is working, if you don’t here it and the machine runs then it’s just the beeper that needs replacing. Give the engine a little shake on land to be sure no bed plate bolts have worked their way loose. Not a bad idea to put a volt meter on the battery while running on land, volts should be somewhere close to 12.8 at idle and 13.4 at 4000 rpm. Great family machines