WHAT KIND OF EXHAUST/HEADER/PROP SYSTEM CAN I USE OUT CRANK OUT SOME SERIOUS POWER OUT OF THIS LITTLE ENGINE.IT RELIABLE,AND EASY TO START,BUT JUST NEEDS A LITTLE KICK IN THE PANTS.ITS IN A CG YAK 54 .

THANK YOU

Hi
I know Al at Jtec/Radiowave has made some good mufflers for that engine. Here is a link for his site.
http://www.jtecrc.com/incowlmufflersgas.htm

Good Luck

Bill