I would advise getting carbon fibre shock towers from fibre lyte in the uk and the strongest is the half circular handle type front tower as this strengthens the front gearbox as well.
Www.radiocontrolzone.com has a lazer zx/zxr thread worth looking at and has setups and solutions to almost any issue you may have. Shells are now available. Ebay is the best way to go for this car unless someone here has items.
Welcome to the club