A friend of mine swears he knows a guy with a 1991 Chevy S10 SS. Now, I have been a round these trucks for awhile and told him the SS did not come out till 1994. It was a 4.3 Vortec Motor with approx. 195hp 240TQ. I told he was high. He swears it it a '91. I asked him if it is a motor swap with an SS badge and he says it is factory. Whatever!! I get online and verify the '94 SS....Couldn't find jack shit on a 1991 S10 SS....Am I missing something....? I told him about the GMC Sonoma GT and the Sy and even showed him mine. He says it looks just like the Sy but is a chevy s10 and NOT GMC. Help me win this bet becuase I am 99.9999% sure Chevy did not produce a 1991 SS unless he needs his eyes checked and is referring to the full size silverado 454 SS....