I've seen several of the builds here, but haven't seen the battery tray/RX box mounted this way.
I moved the RX box to the innermost rear crossmember and mounted the battery cradle and tray directly to the front crossmembers. Uses all stock holes, the only down side is that the RX box is held on with only two screws into the crossmember instead of having the two additional screws on the mounts that are keyed to the frame. Considering how little weight there is there, it should be fine. Some Shoo-Goo can be used to seal the extra two screw holes.
Could also flip the rear crossmember and trim off the loop on the rear-most crossmember and attach the RX box just in front of the bumper if you wanted it to look like a scale fuel tank.
Anyway, hadn't seen one configured this way, thought I'd share.
I moved the RX box to the innermost rear crossmember and mounted the battery cradle and tray directly to the front crossmembers. Uses all stock holes, the only down side is that the RX box is held on with only two screws into the crossmember instead of having the two additional screws on the mounts that are keyed to the frame. Considering how little weight there is there, it should be fine. Some Shoo-Goo can be used to seal the extra two screw holes.

Could also flip the rear crossmember and trim off the loop on the rear-most crossmember and attach the RX box just in front of the bumper if you wanted it to look like a scale fuel tank.




Anyway, hadn't seen one configured this way, thought I'd share.
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