Strengthening the Avanti Seat Mounts: Inner Rear Nut Plate Repair
Does your Avanti’s front seat feel loose or "bouncy"? A common failure point on all 1963–1985 Avantis is the inner rear seat track mounting nut plate, which can break its bond with the fiberglass floor pan over time.
In this step-by-step technical guide, Dan Booth shares his 45-year professional method for a permanent repair. Learn how to install the authentic NOS Part #1350343 nut plate and discover the "Specialist's Secret": using a large 2.5-inch load-spreading washer to prevent the fiberglass from ever breaking again. From preparing the bonding surface to using the "greased bolt and matchstick" trick for a clean installation, this guide ensures your Avanti’s interior is safe, solid, and factory-correct.