News:
When I took out my seats to replace the carpet I found spacers made out of what looked to be plastic about 3/8" tall and 1 3/4" diameter if that helps? They were cracked so I turned up new ones in aluminum. Hope that helps?
Mine were between the track and the carpet.
No E Body that I've ever worked on left the factory with spacers between the seat and the floor pan. I've never heard of a case where they were installed by the factory. Could be a 1970 only thing, I haven't worked on too many 70's.
Trust me, they are needed.