BTW, to anyone running the 416 or 416WC with Lipo packs, they will finally be able to easilly fit into the Tamiya chassis. I've been working with Chris at Manutech Racing, they already make trays for multiple other cars on the market, and when I contacted him about making one for the 416 line, he was more than happy to put one together for me.
Yesterday I got the prototype, it fit into my chassis perfectly, and mounted the pack exactly how I wanted it to. I'll be going to the track today to test the balance of it and give it the "OK" and then they will be readilly available. I'll get pics posted soon as well.
This tray will allow ANY lipo pack to easilly fit into the 416 without worrying about any clearance issues with the upper deck.