Im building my 93 W350 an the stock tank an sending unit just isnt doin it for me....not that its bad but I dont like it....got a hellmann fuel sump an now Im stuck on a fuel tank setup....anyone do anything like this?

Ill be running 1/2inch fuel line and a FASS 150gph pump with pre an post filters....just need ideas on an actual tank...want more fuel capacity....