David,
The 201 is very good out of the box in terms of quality. You can look into Ceramic diff balls and also spring options.
Things to try - LMR Bulkhead for 201 - adding 35g of weight to front to make better at jumping and on bumpy tracks to keep the noise down!
The car is very strong also! you can try the 501X HD rear arms if you ever break a standard one? these are super strong!!!
Another nice touch is the Rudebits carbon battery strap!
Hope this helps.
Lee