In my opinion you've spent alot of money and gained nothing. Well, gained some weight on the truck and lost some in the wallet.
I'd put it back to stock, sell the aluminum and Ti stuff on ebay, and get some rpm a-arms if you're worried about breaking stuff.
I wouldn't run a carbon chassis plate. You'll be losing the biggest heatsink on the truck. The aluminum chassis dissipates alot of engine heat. And I just plain don't think it would last that long for what most people do with gas trucks.
These little trucks are so overpowered by the engine for the little bit they weigh, you probably won't even notice the extra weight. Or you'll maybe think it has better traction than it did stock.
Team Associated & CRC, Trackstar motors/esc's, Spektrum radios.
Keeping racing fun and affordable with my 7 year olds :)
The best track I've raced is the one in my backyard!