Doing some mock up work and struggling to come up with a solution I like. Needs to be NHRA legal because I'll be racing. I also don't want to send all the fuel through the rails and cause a hot circulation problem on long trips like people have run into on Power Tour. I'm definitely running hard line from the tank to the engine bay on the outside of the rail away from the exhaust. Going to transition from steel to hose at -6AN bulkheads in the little sheet metal piece that connects the inner fenders to the body down by the body mounts. And once it's to the regulator I'm happy with dead-heading the rest of the rails and returning the unused fuel before it goes to them. Feeding the rails at the rear seems the cleanest, but I'm worried about legality for NHRA. I know regulators are not allowed on the firewall, but read a post about a 6" rule where they have to be so far forward of the bellhousing. If that's true, this would fail a good tech inspector. Feeding at the front means a lot more hose and it certainly doesn't look as good...whether it's hidden behind (and hard to access) or right on the inner fender. Certainly NHRA legal though. Anyone have a similar setup and a better idea for routing the hoses? I also saw this post on Pro-Touring where you bypass right at the tank and only send a single feed line forward. Lots of guys are doing it with success. Seems less than great to have to crawl under the car to adjust fuel pressure though. My car is gonna be LOW.