Congrats on the tank! Depending on how much your going to bash this sucker you may want to look into upgrading the swing arms to metal. The plastic ones can flex, but again this is only under extreme conditions. Plenty of people still running fine with plastic, just a heads up so you can do at that step of the build process if you like instead of going back and doing it.
http://www.tankzone.co.uk/cart/acc_l2a6.htm
http://www.afv-model.com/4711shop/pr...roducts_id=255