Have to admit, she's a peach for sure. Best looking example I have seen in yonks. Personally I preferred the older 2000/3500 series. The de-dion tube was something else though! Found that they were really heavy and absolute sluts on gas. As suggested in another post, get a Haynes manual, cos changing out the rack is not difficult. The injector thing, I would leave to a pro.
Good luck with your project.

Ah, A Rover with a Buick engine!!!, any decent old time GM Mechanic should be able to work on it. Never liked Sd1's but it does look like a tidy old thing, I did own a P5B at one time, now there's a "proper" Rover...