Big Block vs Cummins Build

[catch2otwo]

So I originally and still do want to do a cummins conversion to my 68 c10. I can find a donor truck right at around 3000, i can do most of the fab work myself. I really like the cummins motor, good mileage, great power, reliable.

Ive been thinking of the bb trucks more of late. I have strayed away from gas due to the poor gas mileage, and what seems like very high cost to have a motor built. If I were to do a mildly warmed over big block with fuel injection and a 5 spd manual, how would it stack up to the cummins? cummins would also be mildly warmed over.

Things like cost, reliability, torque, street manners etc?