I dont know what plastic parts you are talking about. As for the seat mountings . For one I used a saws all to do the removal of the old flooring. I did use a spot weld cutter on the spot welds on the trans tunnel and on the rocker rail. The new floor extends beyound the seat supports so I just cut away the bad sheet metal of the floor on each side of the support and ground off the spotwelds on a bench grinder . when the pan was reinstalled the seat mounts were welded in at the same time. Your seat mounting may look shakey , but after you clean them up you will most likely change your mind. They can be repaired if needed or you can find replacements at the Bone Yard. D Fever take a look at zeddfindings.com .:classic:

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Originally posted by Datsun-Fever

What is the point of those little plastic caps under the body? those where the evil points! the rust started their.

I think you're referring to the rubber plugs that go in the drain holes. Those were to be used in the event of trying to turn your car into a submarine.