The front carriers and spindles are an easy break point.. be sure to have those in your box along with the hinge pin screws that go with them! Also the aluminum CVDs are ok.. but wear fast especially in with a hot mod or bl. You may want to get the steel CVDs.
Most damage comes from "deceleration trama".. that sudden unexpected stop.. crashing.. lol..
I race mine pretty hard with 9x2 mod and 3.5bl (yes.. stupid fast).. does better on a 6.5.. as long as you land on the wheels.. not much breaks.
I race outdoors.. so the sealed belt and spur last a long time.. dont have to worry about your spurs like on the B44 or ZX-5.. they are good cars too.. just open spur gears.
Have fun!
Jerome