I have a 1969 Z28 with standard interior, am restoring it to original ivory color. The upholstery shop called today and told me I need seat back foam with wire in it vs. the original seat foam (without wire) I provided. The seat bottom springs were replaced and the standard foam worked fine. See photo attached, original seat back foam is on right. I can find seat foam for sale with and without wire, the only 2 options I can find. Did the seat bottom come with springs attached to the frame, and the seat back come with springs (or wire?) in the foam not attached to the frame? Just trying to clear this up before I order more product. No one has them in stock and it looks like I have to wait several weeks or months to get them, just wanted to make sure what I order is correct. Thank you.
