PerfectPass Stargazer all the way. I added it to my 2001, kind of cringed at the cost initially, but man it lives up to all the claims and advertising. The guys at PP even sent me a couple different cables to try off the servo motor to see which would fit best. Then said if I took some photos of the install they'd knock off $100 because they didn't have any like mine documented yet.

My wife (or anyone really) can now drive without tearing my arms off or me wakeboarding at 35mph. Surf wave gets dialed in and stays dialed in.

The install on a cable throttle is very straightforward, and adjustments were minimal. Probably the hardest part was routing the wiring from the helm back to the engine compartment. I mounted the GPS puck under my dash and the control module nearby so everything stays neat and clean and I've never had trouble getting a good signal.

The servo motor itself just clamps to a water line w/ hose clamps. Simple but effective. I notched my air intake cover for a little bit of clearance - the only real modification needed.