Nigel:
Based on previous emails regarding frame modifications to 23s for
taller drivers, please see the photo titled "Frame Modification"
which I have posted in the photos section of this site. The car in
question belongs to Don Stark who was my paddock mate at last
weekends Monterey Historics. The car was modified for a tall driver
which included moving the seat back as far as possible. Hope this
picture provides you with a useful solution.
Gary