[ricola]

That definitely sounds like a good idea if do-able, I'm getting more and more extreme with my plans for the cabrio under the skin so may well end up doing a full chassis at this rate!

I have some technical data from Paul Frere's book:

996 rear track with 17" wheels is 1500mm (1480mm with 18" wheels) so if you know stock wheels specs you can work disc to disc width out..
You may end up not using the Porsche central section and could tune the width to what you want, although keeping it stock would help keep things simple with driveshafts and geometry.
Car width is 1765mm but I presume that would include wing mirrors...

Rich

Keep us updated with progress!