So you're building the MPC Cygnus from Disney's The Black Hole, but you want to be cool like James Small and add the missing hull section like this (I've always liked this build).
It'd be a shame to have to cannibalize a second kit to do this. Also potentially a bit expensive. That's why I've been working on a set of 3D printed extension parts.
I'm printing the side panel extensions today. Before too long I should have these selling on e-bay, or you can contact me directly at bverde84 atsign hotmail dawt com if you are interested in a set of extension parts. Final pricing is yet to be determined, but I expect to be around $50-60USD