In this version of the jet, a single round tank of sufficient fuel is not possible unless you rip out all the formers - which are actually glued in pretty well. The intro Boomerang doesn't have much of a good flow path either so I'm not particularly worried about how clean the flow is to the engine. The inlets are very small and it would be hard to choke off the air from them. Besides, the tanks I pointed to are out of stock so I'll probably just make a tank. If I had used those tanks, I was going to put an additional 24 oz tank on top of them.

Plenty of room to work in a nose wheel steering servo on the floor and still put that other equipment tray above it.

RCISFUN - your gear arrangement won't work without cutting away the forward bulkhead to get the retract unit in. So how did you fabricate the servo plate & attach it to the retract unit?? Similar nose gear came with my XJ L-39.

Tough decision at this point - build this one one the next two weeks or so, finish repairing a FB Hawk (about the same time required), or finish the scratch build jet I've pushed aside at least 3 times now.