71 chevy 5.3 hyd slave cylinder/ removing fuel hoses from engine

Hello, i am working on my 71 chevy truck. 2 items to address. 1st is how do you remove flexible fuel lines from the engine. I am running 3/8 and 5/16 stainless tube and would like to connect to the factory flex lines if possible. 2nd question is I put the nv4500 5 speed in my truck from a 96. I have the stock all plastic slave cylinder but not impressed with it. It mounts on the firewall. The earlier model 92-95 had a cast iron with plastic resivoir. I do not like cheap stuff. Any ideas would be great. Thanks to all. Cheers, Alan

I'm not sure your stock lines can handle the higher pressure the 5.3 needs.

Hello, I ran new stainless tubng, 035 thickness from the new stainless tank in the rear. Needto bring it to the engine now. How do I get those flexible lines off the 5.3 fuel rail? Thanks, Alan

Go to your local auto parts store and tell them you need a tool to take a GM quick connection fuel line fitting off. You'll need two of them, one for 5/16" and one for 3/8". You slide the tool over the fuel rail side and shove it into the factory line, push the two together and then you slide the flex hose off.