if you diff is slipping, no that won't work... check out
http://www.duratrax.com/pdf/index.html
for a pfd on all the evaders and you can use that to figure out which one you have and such.... and then take a look around here... it's a bit un organized and such but the info is there.... i'd look into the B4 slipper and the b2 diff mod
https://sites.google.com/site/evaderinfo/
the lug