You can get a good hobbywing combo for £90
http://www.giantshark.co.uk/ezrun-br...-p-406416.html
This is what i used for ages now my step son is running it just need a big pinion 19 or 20T
I have also seen a newer one which is waterproof for the same money somewhere
If you are doing EOE regionals there are lots of SCTE's and Durango's so parts should not be a problem
Or maybe your region will run both classes together but have seperate points for 2WD and 4WD