Hey Jordy,
I think they want 1100US for the fancy version with both speed and rpm based pull, and 675US for the Cruise version with just RPM based pull. If you are barefooting or skiing, you probably want the simpler RPM based control. The speed based control off of a paddle wheel speedo is no good over 30mph, they say. RPM based control is supposedly what everyone prefers for high speed stuff.
The Toyota specific version has a bracket for our specific throttle cable, and reprogrammed firmware to process a 2ppr tach input . I'm not sure what kind of tach signal you get from your 1uz, but you surely don't use the same throttle cable.
Another very viable option would be to obtain an Accuski system. They were OEM on Toyotas. They are RPM based and work well for skiing and barefooting, etc. They are no good for wakeboarding and cannot use the paddle wheel speedo that we need for low speed control. For those reasons, you could probably find a used Accuski system on here that someone pulled out to put in PP. You would want to make sure that someone pulled off all necessary parts, of course. They are actually very cool, they have an automatic pull up feature, etc. It may be necessary to switch to the Kayser Medallion gauges to implement the multigauge that is the Accuski user interface. Malibus (in the states anyway!) use the KM gauge package, lots of other boats do too.
A man with your talents could probably adapt an aftermarket automotive cruise control fairly easily. For what you probably need, it has all the elements. You need an actuator, either a rotary or lever type stepper motor, a tach (pickup w/magnet attached to drive shaft), and a way to disengage when braking or slowing. PP somehow senses when the rotary solenoid feels slack in the cable. Accuski uses a footswitch (high beam switch!) for that purpose, I believe.
We kicked that idea around for a while here, but since a lot of us are wakeboarders that need (low) speed based control off a very precise paddle wheel speedo, it meant we would have to design an interface with calibration capabilities for the paddle wheel speedo. And, somehow adapt it to the control strategy of an existing rpm based speed control. And figure out a way to make the system more aggressive when we add 2k of water weight to make the wake big. Too much modification needed. So, I designed a small bracket to attach the PP cable, and the system works great for wakeboarding.
Here are links to both manufacturer sites, there is a lot of info on both. PP even has a downloadable simulator that you can run.
www.accuski.comwww.perfectpass.com
