what brand
 

what brand is this buggy

Roketa, maybe!?

so which engine came in these buggy?

Here you go.

It is a desirable frame due to it being a bit larger than most of the others.

so what engine was in it from the factory..the one that was in it got torn up so the guy I bought it from tried to put in a motor that nothing lined up....so what engine can I get that will fit and work in the buggy

That is either a Roketa or Kandi. Looks to be the GY6 but with internal reverse. Your best bet is to rebuild that engine since new ones are about $800.00. You could fit the normal scooter GY6 but this will require fabrication of the carrier and axle. It will be cheaper and less work to fix the engine. What is torn up with the engine?

big hole in the case

Depending on the extent of the damage externally and internally, you might be better off finding a replacement. I know case halves aren't real expensive, but you got to look at what went through it and why. Likely a rod snapped from piston seizing, and tossed out the side, but without pics of the engine, its hard to say.

That GY6 case from what I can tell by your pics does not look like the basic GY6 which used an external reverse unit. I would need to see more pics of the engine from several different angles as if I were standing right there looking at it. The Kandi uses the same engine as the Hammerhead and ASW. Roketa sold a buggy which looks like the Kandi but used a different engine design. I'll need pics mainly of the right side (passenger). You can e-mail them to <tom@sycpowersports.com> Once we identify the engine type we can see what's available. Some of the older Roketa of that design used the Sunl motors which some are not available for they have been out of business for quite some time. Send me some good pics and I will try to get you what you need.

its a kandi just search it