I found most parts i needed on ebay, carbs usually go for around $ 20.00
Also those wishing to upgrade some components on their buggies here is what i have done:

1- replace the front driveshafts with a universal one it's called a dogbone #40160

2- buy a set of bearings for the wheels and differentials {also on ebay}

3- replace the standard air filter with a high flow one for less restriction

hope this helps