fuel cell ???
fuel cell ???
bosch 044 or walbro 392- the bosch is used a lot on rally racers, the walbro on a lot of offroading. Both are proven beyond any doubt. If you're going fuel cell do a search over at pirate4x4 and read billavistas article on fuel cell plumbing. Both are very informative and will point you in the right direction.
The reasonable man adapts himself to the world; the unreasonable man persists in trying to adapt the world to himself. Therefore all progress depends on me.