RE: Looking for a .07 size plane
no I havent sorry but it looks like the others.
I think you have a flat former that you have to glue the "electric" firewall on to. just glue on some 3/32 Soft wood to the shape of the fuselage to cover all holes. figure out the spacing needed to clear the cowl (mount cowl first). then build a box or spacers need to mount the TT in it. Leave some room to grow. like make the box 1/2-3/4" shorter than needed. this is so if later you want to add a 15, TT18 or OS 30 FS you will not have to do much.
Remember this engine will put out about 16-17 ounces of thrust in a 25-30 ounce airframe so can horse it off the ground will have to fly on the wing. I would also go with the 2 ounce tank for a good ten minutes at full power.
Also need to open the muffler up as much as you can not much difference in sound but 2-3 more rpm is there.