Well firstly I don't see how they can defect you for a seat, provided its secured to all 4 fixture points and is ADR approved. And even if not, did they take photos? And whats wrong with the bonnet? Defecting you with either of those two is a bit petty.
If they didn't take photos, then chuck the stock stuff on, call up the courts authority and say u want to challenge the defect as it was only passed within the last 4 weeks.
Speaking of defects, I'm in the process of moving my boost controller. Aiieee what a job. So much dodgy wiring under the dash. I disconnected the earth to the boost controller and the alarm went off *sigh*
Gotta love DIY japanese electronics. Cableties, twisted wires and electrical tape. Dude obviously never heard of a soldering iron and heatwrap...
-D