Black Horse P47 + Saito FG90R3, Maiden Flight 

Thank you very much!! 😄

He is a landing specialist. 🙂

Thank you very much!!! 😎

The owner used the muffler made from china. I have no idea about this product brand. Thank you for your interest. 😄

It is ring muffler from Taobao China. You can get the same thing from the aliexpress.

Additional holes are required in the cowl because the cam cover of the engine interferes with the cowl.