Pelican typically sells the necessary hoses in bulk. So you'll have some leftover when you're done.
I too have problems getting fuel injection hose from my local franchise parts stores (Advance Auto, Murray's, AutoZone, PepBoyz,..... they all stink for this stuff). The hose they have is usually SAE 30R7 which is not rated high enough pressure-wise for fuel injection. I buy hose by the foot from McMaster Carr.
http://www.mcmaster.com/nav/enter.asp?pagenum=238
The stuff you need is "SAE-Rated Buna-N Fuel and Hydraulic Hose" in 30R2 or 30R3 rating. I love that McMaster. You can get just about anything there and it's good quality stuff.