So I don't lose any space in the back i'm going to build a cage which sits above the tank. It will be good for holding things and should also protect the tank from getting hit by stuff. Brendan helped me install his old radio into the FJ40. I picked up some kenwood speakers for $49 and it works pretty good. Can't really hear it when travelling more than 80km/h but it's alright around town.

The basic design

19x19 steel tube. Lots of clamping and welding

One side done

Two sides done, bolts onto tank bracket and existing threads from the seat

Turned out pretty much the same as the sketch. 76cmx62cm

The hand-me-down radio. Originally dads then mine then Brendans and now mine again

Kenwood 4" speakers in the doors