Options for fixing my factory bench seat???

[kickinasphalt]

My 72 K10 has pretty decent interior with a nice black/white/grey houndstooth thats in good shape. The seat itself seems to be worn out because I can feel the spring under the foam when I hit bumps and the foam is quite thin. I was thinking I could pull the seat out of my old beater 2wd since that seat is pretty comfortable (padding seems thicker). I would probably just have the cover swapped. I've seen new foam pices in LMC but they are like $200 which seems a bit much for foam. Are there any other cheaper options out for just repairing the seat or am I better of swapping and recovering. Thanks!