Lipo tray for old CATs

[kaszal]

I really need help finding a Lipo tray or holder for my CATs. I'm using a 6.6v Li-Fe stick pack (which doesn't push the car so much) and the box is much the same size as Li-po. At the moment I'm putting it across the chassis where the saddle pack Ni-Mh used to be and using glassfibre tape to keep it in place. Works fine but a hassle if I want to change packs. I'm also considering putting it lengthways along centre line i.e. between the decks and moving the servo to one side. What frames/stops, posts and straps could I use? Thanks for your suggestions!