55-59 fuel injection tank Q

[hotrodrookie]

Im puting a 5.3l in my truck and Im trying to find a cost effective way to go with the tank.
Anyone have info on modyfing oddbal tanks that fit between my frame to work with the ls motors?

Or I was thinking of buying a cell from summit.

I thought I saw it somewhere in this board of someone who had a tank from an ls1 camaro and it looked like it fit really nice in between the rails under the bed of a task force, if anyone knows what Im talking about let me know.
Thanks