How To:Biggest Magnum TQ Monster

so how would you do it?

two builds
first has to be a stock bottom end of a 5.9L,second is a 426" bottom end

So here is my goals and usage:
This is for the 97 ram we just picked up, already gonna be doing the kegger mods (remove wall,shorted ports,port match,plenum fill, and lastly turtle) CAI, new exhaust and SCT tunner which until i can afford heads is as much as i know on these.

This is my first and only Small block i have ever owned so this is all new to me. im only going for low end tq and good mpg (towing and not).

What do you guys think? also im not converting to a stick or a 24v so dont bother. but gear and converter/trans upgrades welcome!