Here you go Arnie....I would imagine a similar image in your mindArnie_DK wrote:Please do Alpha. Would like to see a drawing from you
Cutting the wall have been on my mind as well, but I think the integrity of the hull would suffer, if I remove it...
And I think Tamiya is out of the question

The area in pink are for block you should make so you can have something to hold the gun locking plate illustrated in the area in blue....The block would also depend on where you finally decide to have your pivot point...the blocks should also help in reinforcing the hull

The locking plate for the back of the mech pivot I would make out of metal...aluminum steel or brass whatever you might have available ...two bends...one to cover the dovetail..the other to provide a screw down point
It's kind of rough...it will definitely need refinement on your part

Hope it helps a little
Good Luck Arnie

ALPHA