I bought their fuel line system, but if doing this over, I wouldn't. Ended up needing many more and/or different fittings than what was supplied. Plus, they supplied their fuel pump system which required a t-fitting to the return line (look at the picture on the Mass-flo web page you'll know what I mean) which involved more fittings and hook-ups which turned out to be unnecessary. By that I mean their fuel pump (the one in my kit Mallory 110FI) required that fitting. That pump is huge (tall), was a problem for mounting where it didn't extend down below the frame, this spring I changed over to a Mallory 4261FI (approved by Chris at mass-flo) and this does not require the t-fitting return. I still use the kit's pressure regulator, main filter, some of their lines for the fuel return system, but overall, many unused pieces and had to find many fittings and setup pieces on my own. Your mileage may vary, of course
