If you're happy with it great.
I put a Durofoam seat foam in my truck.
https://www.theseatshop.com/store/pr...?category=Foam
You unbolt the cushion frame from the track and take it out cover, cushion, and frame. It's bloody easy to do. You flip the butt cushion assembly upside down on top of a towel on the workbench, unclip the fabric or leather, pull the foam out and reverse the process. I had to vacuum off the disintegrating butt foam from the fabric and frame but that was pretty much it.
It took me a little over an hour because I'm slow.
Made a world of difference in how it feels.
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8
RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.