By Cam Benty Photos by Cam Benty and Gary Nelson When the first Chevy C10 pickups hit the road back in 1960, they offered a great way to hall hay – and maybe some passengers. Equipped with GM’s classic A-arm suspension, tube shocks and four-wheel drum brakes, they bore little resemblance to the performance suspensions offered on their cars. Now, thanks to parts offered by Aldan American, Performance Online and…