Engine swap
 

Wanting to find a way more powerful engine that will fit on my manco warrior 720L. Anyone know of an engine I can swap with? Right now it's a robin Subaru engine ex-24 I think. I'm looking for more of a dirtbike engine or something

There is no swap for replacing. You can put anything in there the frame will handle but you will have a whole lot of modding to do. First you will probably have to fabricate the whole rear engine carrier as well as the whole rear suspension as well as the axle. There are some threads in here you can view which will give you some ideas as well as for you to see what is involved.