GM 6264M help
not working on an ls, working on a 91 305. has gm 6264m hose for the fuel injection supply and for the return side. Fitting are different sized, return is smaller than supply. Hose is the same for both. Is this correct from GM for the larger size to use the same hose?
Need to replace the hose, doing an swap into a 65 c10. Wondering what size hose I should use, same for both or different size for each? If so, what sizes should I use. Gonna need 13' so it looks like Ill be buying two 25' rolls of whatever I need anyway.
Thanks for any guidance.

