I don't run lockers in my Savage, but I do snap a lot of dogbones. I run THS CVDs, and I consider them the weakest link in my drivetrain, which is ok, They're easier to change on the field than diff or tranny gears. If you want to beef up your drive axles, I'd recommend MIP CVDs. I haven't run them on a monster truck, but on all my 10th scale stuff they've been pretty indestructible.