That's a little cryptic but we'll try.
You can adapt an Audiovox CSS100 cruise control unit to the R3 but you'll need an auxilliary vacuum pump to provide enough stable vacuum to successfuly modulate the servo. I have one sitting here in the shop. I was, at one time, going to install it but I never did.
If by 'far out' you are referring to price, the Audiovox unit is around 100 bucks and a vacuum pump could be as much depending on what and where you get it at. A compatible pump would be one that operates the front 4wd engagement system on a Ford Superduty pickup. The vacuum pump has to be compact and switchable and the Ford pump is. Best place to get the Ford pump would be a boneyard. You'll have to modify the harness or get both the male and the female Mollex plugs and as much of the harness as possible.