why not get a used truck? and a x-factor would be good for muddin but i duno about jumpin...if you locked the axles then its be unstopable ( i think i spelled that wrong) or a stampede would be good with a diff engine like a fantom 15 or even an o.s...you would want to gear it a lil lower than stock and lock the diff in the trasmision...you wouldnt want a staium truck though cause they dont have near enough cleareance to go through any big mud puddles and youll definitly want a nice air filter...like a motor saver...i dont like 3-stage filters cause they imo dont allow enough air flow...