Nissan Titan Crawler

[1monstertitan]

Ok so heres what I got done so far...

Off road kit, custom body lift, custom shaved body kit, slammed rims with super swampers, locked diff, 8-25 gears with stage 2 motor, 4wd upgrade, aluminum wheel nuts, 10.5 mm axle upgrade, and gen 1 stiff springs...

I want just a little more power, so I was thinking of a lith-ion upgrade, but does anyone else have any suggestions as far as a cheap power upgrade?

I did FETS on my Gen 1 Camaro, but I really dont want to get that down and dirty with the Titan, just a little extra juice to help me climb some bigger rocks would help...