I bought the BC EFI rear hookup line. It was a HUGE PITA to install. This is with the body on.
The pushlock fittings are very tight, but they need to be, so +/-
the fuel filter included with the kit is too big, ends above the axle and offers little room to make connections.
The front lines do not adequately clear the T-Case cross member. Clearance was unintentionally made when jacking the t-case back into place.
My kit shipped with the wrong fittings. BC replaced them free of charge, but it was a source of irritation.
None of this can communicate the several, frustrating, hours I fought getting this installed.
All said and done, if you were installing this on a frame, with the body off, the install would be a breeze. However, that said, if you are installing fuel rails with the body off, there is no reason you couldn't just use a single piece unit from your local tubes & hoses shop, or bend your own.
I would not, in any circumstance, recommend the BC lines, either from an install or a money perspective.
BC makes other great products, but this did not turn out to be the hassle free kit I thought it would be.