Side mounting is basically the same as you have it mounted now. If you are going to use a pitts type muffler, you need to make holes in the cowl for exhaust exit. You might have to reconfigure your throttle pushrod and fuel tank lines. Depending on the type of motor mount that you are using you may just be able to remove it and turn it 90 degrees. If you are using the Sig mounts you will probally have to redrill the mounting holes. With a cowled engine, cooling is always the main concern. Good Luck, Dave