Manco Warrior 720L 265cc
 

I am wanting to know what dirt bike engine or some engine of that magnitude would work with this buggy. I want it to have lots of power!

Thanks!

Here's a link to a couple of different engine swaps for your buggy/kart (bottom of the page)
http://en-my.oscarseek.com/item/Manco+Warrior+Go+Kart
Since I think reverse is important I like the ATV engines. There's a fair amount of things to modify to do this.