Ask them if they fit shortcase?
Scrappydog is pretty good about answering questions.
I have a long case exhaust for my 125 and I had to fab a bracket, otherwise it was fine
m not saying all aftermarket "universal" exhaust are bad but I have found that the more pieces/parts/bolts and adapters the more chances you have for failure. I have had terrible luck with Prima exhaust on a Buddy 125, but I do ride hard and Im sure going off curbs was never in the design brief. Others have had great luck with Prima exhaust. They are a 1 piece design. Either way, if you go with the Scrappy exhaust post your results. You may find a hidden gem in exhaust options for a Buddy.
An exhaust alone is not going to make a Buddy much faster, as its tuned pretty good from the factory as is. A NCY, Prima or other aftermarket exhaust do not have a catalytic converters like the OEM exhaust, so they are a bit more free flowing. I loved my NCY and it sounds pretty good without the silencer installed. The Prima sounds (and looks) the best but I had bad luck with them cracking in various places. If you just want a bit of flash and sound then get a exhaust. Then you will already have one piece of the puzzle already towards bbk goodness!