Seat foam recommendations

I wish I could say that there was a good one out there, but most of them are larger than original or just generic fits for multiple years and body platforms like A's and B's most are going to need a little massaging to get them to fit. I had to take an air grinder and a new 80 grit disc to the legendary seat buns for my 70 challenger. I had to shave over 1 inch off the sides to let the new skins fit the buns (since I'm working and learning at a custom interior shop it helped) the backrest needed the least work but still had to be massaged to fit good without looking "overstuffed" thewy still look good after 20k driving on em.
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