This is for an 1970 E-Body. I cut the existing covers off cleanly and the foam backs look awesome but the driver's bottom cushion foam needs to be replaced. It looks like most dealers sell the top and bottom foams together. Anyone know where I can get just the bottoms?

So I spoke too fast. I did an Ebay search for Seat Bun and E-Body, etc and I found a single bun I needed so all is well.