There's a bunch of responses on EFI's. I believe that's the one people are most happy with. I'll try and find the thread also. I have FiTech myself, with the Fuel Command Center because I couldn't find a tank for my application to sump a pump. I had to send back the first FCC because I had problems with it. Seems like they might be problematic. Mine is mounted underhood right front and maybe too much heat for pump. The second one has been good and I like the system. I wrapped the second one with heat wrap to try in insulate some. The biggest reason I did it was for easy starts after car sat for days and easy cold starts and I have both now. I thought I had a pic of where I mounted FCC but can't find on my computer but it's an '89 Diplomat so nobody will care lol.