People have done it without any mods and it runs ok, it won't be very fast, or have much torque to crawl, but it will be proportional.

The only way to get more current would be to increase the voltage (which you can't without an off board turbo), do the DC duty cycle mod, or upgrade the FETs.

FETs would be very difficult to solder, and a little spendy. The DC mod is too much imo. I'd say you're better off with the iwaver board, which would give you a foundation to do much more with your truck.