I wanna change my fuel lines under the hood to the braided ones...wat is need to do this...94 lt1

 

If you are willing to use compression-to-AN fittings to attach the braided lines to the hard lines under the rocker panel, and at the fuel rails, you just need (2) 3/8" and (2) 5/16" compression fittings. I think Earls makes them.

Ive run braided lines for the complete system, in which case you need to weld AN fittings into the back ends of the fuel rails, use an outboard FPR, and make quite a few changes to the fuel pump support assembly.