Tamiya Rock Crawler (CR-01 chassis) just got one after ideas

[d_drinks]

Just got the Tamiya CR-01 chassis with the Toyota body and am looking for ideas on what hop up parts are out there? Thinking of a rock crawler motor but are there upgraded bead lock wheels, aluminum parts etc. Done the usual trawl of the web but anyone else here got one, and what have you done to it?
Cheers
Darren