1) I used it once, it blocked all my filters up. Probably needed it though!
2) New spheres, no question.
3) I think its because theres something behind the dash that would be in the way if it were fitted to the left of our UK dashes. Maybe something on the bulkhead....there ain't much space there.
4) Not so much. I know my dad had his old BX snap a cable a couple of times (1983 16TRS) but I've never had a problem.
5) Electric drivers side mirrors were standard on 16v's after early 1990. Before that they were manual on drivers side, eleccy on passengers side. Mines a post January 1990 Car and has two electric mirrors, the drivers one is heated.
6) All 16v seats have "lumbar" adjustment. But as you probably know, the leather seats were based on the GTi ones so no adjustment and alot less support. Still cool though
7) All 16v's have electric rear windows over here. Aswell as GTi's, TZ's and TR's.
Oh and that heater control panel job.......pure brilliance mate, possibly the best interior mod I've seen to a BX. Keep us posted on that.