I can confirm that there are 3 adjusting holes
per each mounting point (four per each seat) as I had to adjust my driver seat soon after I bought my CSL, end of last year. It was set up for the previous owner who was somewhat shorter then me. When I got in behind the wheel on the maiden voyage home, I was nearly touching the roof lining
being 6 foot 2 and a bit
. It's a bit of a fiddle (especially with the inner 2 bolts, near the centre console) but doable. Ratchet spanner is your friend on this job
Thank U please