ben_danger said:^i meant that film!:p
Crickey Ben we seem to be synchronised today :-)
The Time Guardian has got a DVD release too (more Carrie in metal boobs action) I'm not sure if it would be useful but you might be able to get something out of it (even if it's just Carrie with metal boobs).
http://www.amazon.co.uk/Guardian-Premium-Anamorphic-Widescreen-Release/dp/B0012GVKEQ
There would be a bit of irony of sampling from Slipstream for a ROTJ edit because it would mean Gary Kurtz gets directly into the final part of the OT at last (even if it wasn't from his finest work).