4x4's have no problem at all ... make sure to get a good run at the bigger hills to get up them, dont fly over, may be a straight drop off .. always think that there may be someone coming form the other side ..
they do good work. Lonnie and Ed are really cool, laid-back guys. not stuck up at all. will listen to and answer your questions all day long. you would not regret letting them build you a motor
any of the site sponsors .. stay away from Trinity .. call different builders and talk to them about a build .. dont call just one because a few people recommend .. call a bunch, and see who you feel comfortable doing business with ...