One small problem is that the mcd rally bodies are 38cm wide. You need to use MCD wheels with diffrent offset to fit the wheels under the body. Also the wheel shafts will be too long, so they stick out abt 1cm outside the mcd wheels.
The mcd gravel tires are hard to find.. I waited 2 months..
One alternative could also be to use a wider 40cm body, then it is maybe possible to use standard FG wheels..
I think the mini looks nice and it's 392mm wide..
http://www.rc-car-online-shop.deHere is a link to my mcd rally-project
http://www.rcbash.se/forum/viewtopic.php?f=15&t=1661Still needs a better engine and some other modifications

I plan to use it on gravel and asphalt, maybe some snow too.