You should replace the compression fittings with either inverted flare adapters and hard, douple lap flared lines, or hose bard x pipe size adapters and fuel hose. Try to use hard tubing for as much as possible. If you have the stock original lines, they can be removed and copied off the truck. Using a douple lap flaring tool, you can reproduce the barb on the end for fuel hose by using the adapters supplied with the tool. You can buy lengths of properly flared, hard tube at most parts stores which can be bent and cut to fit, or a coil of steel tubing to use for fabricating.
Take the core fittings with you to an edelmann cabinet at the parts store to find the proper ones you will need.
