fyi, I sent you a pm regarding my Safety Devices bolt-in roll cage. might be just what you need:
Porsche 986 Boxster 6 Point Bolt-in Roll Cage | Safety Devices
i'd consider selling it for not too much, and shipping within canada wouldn't be too bad (as opposed to bringing it in from the uk or us). mine has two bolt-in door bars on each side as well. works with the soft top, and you can remove any bars you don't want for day to day use.