ok Chero fans, So I went to autozone to just check on what size hose I needed for the manifold vacuum to transmission modulator I needed. first of all I did'nt know which transmission I had C4 or C6 AOD for my '79 351/400M ranchero. He brought up several modulators with different color codes. Well now, what the heck. red, green yellow or orange strip ? ? ?. What do the color coded modulators mean. Different shift perameters I thought. so I'm guessing what size hose and what striped color coded modulator, any thoughts would be cool.