Only if you strip a Scimitar SS1 will you know how its constructed!!
The windscreen is part of the body tub which is a one piece construction made-up of the windscreen/bulkhead/floor pan.
This whole assembly can be unbolted from the chassis.
If you take the time and trouble to look at the link below (thanks Oxford 13/60) this whole assembly can clearly be seen, windscreen in place, being lifted over the chassis and the chassis can also be clearly seen with-out the body tub assembly fitted.
http://www.scimitarweb.co.uk/sgwrs/viewtopic.php?t=1510
In this construction I chose to use the body tub with-out the windscreen surround because it makes the build quicker, easier and stronger. Even the original floor carpet can be re-used
So IMHO, no IVA required
