Tonight I built the new (and improved! ha!) sponson weapons.
The red tube that sticks out the top will be trimmed, there is a sensor box that goes on top of it. I've added the vinyl tubing again underneath the guns - this time the setup is more forgiving angle-wise, so the tubes look better.
I've also added a little skull, and a purity seal, both made from sculpey.
I used some tubing between the guns to keep the spacing right, so I'll have to cover that up somehow.