I hope the OP doesn't mind me posting my build as i go as well?

I didn't get much done today on mine, I got the tail gear mounted, servos mounted on the wing and got the inner servos ready, o and worked out the location for the motor.

As I'm on a budget I am using a .75 two stroke instead of the popular 4 strokes. because of this the muffler sticks out horribly on the side of the plane when mounted inverted.

What I have done is aligned the mounts so the motor will be at 225deg from upwards allowing the muffler to slot perfectly into the pre made exhaust section. The only down side is I need to make an incision for part of the head to come out of the cowl, but its only slightly coming out and will give reasonable ventilation so it would look better than a 70 size muffler sticking down the side

I will update pics later tonight as my camera has run out of batteries :P