I have a 1962 chev 1/2 ton with stock 3.90 rear end gear ratio.(10 bolt) I want to switch it with another gear ratio so my 235 motor won't scream

down the road as much. What differnt ratios are available? Everyone tells me something different. :mad: I would like to get a used one if possible from what years and model cars or trucks will fit?!?!?! and where can i get new ones? :rolleyes: