Hi Gents
I am in the process of mounting a RCV58-CD in mi GP T-6. I am mounting the engine in the 12 O'clock position and running it only with a OS flexible exhaust extension, in roughly the scale position. I find the engine very quiet running without the muffler, not to require it. The engine is smaller than an OS 40 2cycle engine and gives me about a 1/2 inch of space to pair inside the cowl, without having to cut a hole for the head. I will also use a remote glow plug adapter, and in that way I wont have any holes in the cowl at all. I also decided to mount the same engine in my 82" Beaver, and decided to mount the engine in the 7:30 position. In this way the exhaust will come straight down without the use of any fancy and EXPENSIVE plumbing (IE OS Flexible Extension OUCH!) I wish I would have thought of this with the T-6. I am posting a picture of the installation.