hi
you can adjust the headlight beams, they are adjuster on the back of the head light, cant remember whether there allen key or philips screw slot, but there there.
only problem is there not seperate, the adjusters adjust both, so will raise both high beam and low beam at same time.
as for linkages on suspension, as you car has the manual adjustment on the dash, this means you car has halogen lights, not hid, which means there not self leveling, so there is no linkages on the suspension, as there are no level sensors fitted.
also all the factory workshop manual are in this link, this will eliminate any guess work. http://www.jagrepair.com/
cheers
Joe