I think ur right. Found some traces of old fabric on the springs....faded and dusty but appears to be black with maroon,

Any idea where I can find some seat cushion springs or is that a lost cause?

'50 Chevy 1 ton dually daily driver, 1960 Ford F-100, 1972 GMC C-20, 1958 Kenworth, Cat D4, 1972 Ford F100 Ranger