Clean rollcage installation possible?

[GabrielKnight]

Is there any such thing as a rollcage that wouldn't require any alterations or leave any marks on my near mint Willy 3 should I later want to take it out?

I see that you can get bolt-in or weld-in. Does that mean that the bolts or welding has to be done to the car body too or just within the frame?

I'd also like to leave the sunroof clear, but I guess that's asking too much?

[Coops]

erm, no chance mate, whole point of a cage is its integral to the car to provide chassis rigidity and safety

as such its either bolted or welded into the car itself

any 'damage' can be technically patched up again after of course, but it depends if your a total mint/original freak who doesnt want any unnecessary bodywork done