As you have the car in your possession I'd strip it of anything that's not stock & let them fight you if they want to waste their money on lawyers...call their bluff & see what happens, there are plenty of stock GX parts out there. Good luck.

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Beaten up old 98 Gen 2 Liberty, 13.0, stock V3 STI running gear.
07 Transit motor home
69 VF & 70 VG Valiants needing full restoration
Yamaha Zooma 50cc rocket hopefully going with the Transit.