At the point where this winter I will finish the Mods/paintng to the 86GT under carriage. I am running a 357, 750 QF and a holley blue pump and a return regulator fuel system with 2 Aero filters, pre /post pump. 3/8 feed and return lines to the Lethal Performance tank pick-up.
I snaked out the entire factor EFI fuel lines and have them in tacked but by no means want to run the line as did from the factor for this conversion. I will run stainless the length of the car except at the tank and at the Regulator/carb. At these points I have braided lines and fittings stuff both AN and NPT on hand.

Question: What are the rules for running fuel lines down the "Inside" attached to the frame rails in the drive shaft tunnel and outside attached to the frame rails?? Tech inspection concerns of any type of race sanction.
If you have seem my earlier posts of the full length frame rails I installed there is plenty of room to run them along these types of rails.

Please Advise

Thank you