I would not go that far, but I know some of it about the truck.
Its a solid performer, it is a MUST to do a complete teardown and proceed w a thorough ass3mbly with threadlocker and correct diff and shock oil.
***change the diff gears for Losi, and if possible put metal diff housing, the one from the 305 I think it is, will work fine. Thats what I have on mine. Red springs at least on the rear shocks, like always killer bee and done. Strange enough the servos are good, but the ones used in the 305 are way better for a good price, if at some point swapping them. As you go along stick w Losi parts and wont go wrong.
Oh yeah, get rid off the plastic intake manifold and carb filter, garbage.
I have jumped, beat down the poor X2 into submission and I still have the stock servos, shocks, arms, towers, etc. The only things that failed were the diffs, everything else, dog bones, burned servo, tires, wheels replaces has been tear and wear after a year.
If you buy it, put on top of it hundred bucks some wrench time and will have one solid truck. The stock controller is Flysky compatible which is a plus, I still have the tx that came w it, no issues. Do set failsafe as mine was not configured correctly.
And once again, Killer Bee for your safety and of others.
Am on rc airplanes for now until the bugs fades away, but will surely put some large scale bashing time soon.