Had mine fitted by Williams - see chunky above.
Day and a half to fit and top job.
Austin later modified my tonneau to fit - when he started there a few months later.
No issues with loss of room...both dogs still love the trips out with no complaints about room to lie down ( spaniels).
Roof fits fine.
Car also feels tighter with less flex, less chassis twist over uneven surfaces.
A bit more chrome to polish....
I haven't tested it out in a rollover yet though....
