The xx4we is a well engineered (Jukka) and well balanced car, it is still worth getting even if it is a 10yr old car
The only problem I see is the graphite/plastic parts are very brittle especially if you live in warm weather
I have 2 xx4we and will be racing in the Cactus Classic this year
This is why I have 2 if something breaks I will use the other car, if that breaks I'm screwed

You can still get alot of parts from losiparts house and yes they are making xx4 chassis and rear shock towers, the new ones have the new losi logo
just my 2 cents
Anyone know where I can get setups for the cactus classic