I retrofitted cruise control to my 740 turbodiesel.
The tricky bit on early cars (pre 94) is they don't come pre wired.
Other than that, it's sometimes tough finding the right throttle spindle reel.
The rest of the bits are easy enough to get, and it's a straightforward system really
If you're the sort of person who values cruise control, I'd keep hold of the bits you can find
