The main thing is the long arms and the long chassis. With the long chassis/arms you are much more stable then a buggy built truggy. The wheel extenders stress the axles, amrs, and axle carriers. With long arms you don't have the added stress on the alxe carriers, arms, and or the alxes. And with a purpose built truggy you don't have to have such an extreme geering nightmare. My truggy has a 14t cb and a 50t spur. And I'm still breaking loose all the time. When you build a truggy from a buggy you have to go to a 60+ tooth cb. Talk to plaid about the gearing problems he has had with his mewtant maxxxx.