Hi Doug,
Does this plane come with a cowl? If so......what engine are you using? 2-stroke or 4-stroke.

As far as I know.....with Phoenix models.....2-strokes can either be mounted straight up of 45 degrees. 4-stroke...definately 45 degrees and turn the carb around so that the high speed needle is up. The distance from the fire-wall to the engine bearing or back of the Spinner is 5 inches, for the .40 size planes. Hope this helps....