Installation of Brake and Fuel Lines
I reached that same spot about a month ago. Suggestions: by a 25 or 50 roll of 3/8th and 1/4 tubing. It takes a while to get the hang of bending and flaring. I had a lot of trials and screw ups to get everything just like I wanted it.
Aircraft spruce has a large selection of fittings. I bought spares of the standard nuts and flares as well as some additional right angles. I also modified some of their recommendations and needed a few more fittings for that. If you have a purge return line, then more fittings for that. You also need to get a boost pump and filter (if you are going fuel injection). Lots to think about with the fuel lines.
If you are using standard van's gear, their suggestions for line placement work fine. If using Grove gear, you need to place the brake line exit a slightly different place.
Good luck
Michael Wynn
RV 8 Fuselage
San Ramon