I need a new project, suggestions?

i have the losi mini t solid foams for wheels, and a 60/14 gearing...not sure about mph but fast enough to keep you on your toes....I have done some rearanging on the chassis and I could fit a long can motor on there if i wanted...this would run cooler. I go through the the input gear and the gear in the rear diff the most...I try to keep those stocked up