EJ the TF lander your making in the gallery has two engines mounted one atop the other.

 

BUT in the movies and all the games I've seen it has them side by side.

just wondering if this is for looks or rather just a mistake.

actually the trade federation appears to have two variants of the lander, one that is capable of deep space travel alone and one that needs to be launched from a carrier, this is the first variant as it makes more sense specifically as a seperate landing craft. I plan on making the invasion abilities actually spawn landing craft from lucrehulks in the future, but we'll see how that works