Dorman makes fuel line repair kits that have the same threads to fit the 3727 and a compression fitting on the other end. Those filters are 5-8 bucks just about everywhere. It's the factory online filter for the injected 4.3, 5.3, 5.7, etc.. I can send you all the stuff for around 20 bucks to hook one up. Just email me if interested.
1lowluv@gmail.com