I don't know if this is possible with the polygon count yu're allowed, but I was dro...er...looking at the screenies of the Ki-84 you posted and I noticed that the exhast stubs and cowling flaps are not modeled with the polygons. That they are textures only.

I was wondering if there is any way to the the exhaust stubs modeled in 3D as on the A6M5b or to have the cowling flaps in 3D. Thanks for your work.
I eagerly await killing La-7s in it.