Fuel Line Routing

I'm using 1/2" aluminum fuel line and AN-8 fittings for my 69 Valiant Pro Street. I'm looking for any trick ideas to run the fuel line through the frame instead of around it. I see through frame brake line fitting but, nothing in 1/2" for fuel, These are nice. I would like to use solid aluminum tube and AN fittings as much as possible becaue it's free at work (lucky me). I'm trying to comply with NHRA rules and stay away from the area of the drive shaft tunnel, frame rail to frame rail & front and rear wheel wells. I'm using an alunimum fuel cell in the rear as well with a return fuel line. Thanxs :prayer: