fuel injection gas tank for 57 chevy truck

Im building a 57 chevy truck, so far I have a camaro frount clip and a camaro narrowed rearend which is pretty mutch a done deal, now Im installing a 305 multi-port w/ a 700r tranny thats got me wondering what my options for a fuel injection tank would be. Im trying to come up with somthing reasonalbly priced. So far all I have found is a $750 gas tank that would really cut into my truck budget. Has anyone installed a injection tank from some type of car or truck that looks decent & would fit under my truck or does someone make a injection tank that would fit behind my seat to replace the stock one. HELP!

Why not just rig a dip tube for the fuel pickup and then run an external, electric fuel pump?

Abe