Normal size Pommy drivers
I'm 5'10" and have the same problem... hair ju-u-u-st touches the headlining... if its sticking up a bit or not long enough to lay back down...
No spacers under my electric seat that I can see.- Will check rear mounts but front of rails are hard on the tin-plate framing...
Sensible long-term idea would be to have the mounts re-built an inch or so lower, let the seat-height mechanism extend upward for the vertically challenged occasional drivers... Expensive, though cheaper than buying another car or having the whole roof lifted an inch or two.
Its the sun-roof that takes that last usefull inch of headspace!
Look on the Bright Side... what other luxury vehicle can make a bloke GLAD to be bald ? :D
James in Perth