you wont strip a 12.9 hex..... the allen wrench will give first..... only trouble I've ever had have been with stainless / mild steel which rust in place and round off
plus I am single handedly trying to keep copperslip afloat with the amount i'm using on the rebuild lol
bzp sockets will certainly be better than using standard steel bolts... the landrover originals were able to spontaneously rust at the very mention of water
cheers steve
that is what i meant the allen wrench stripping, a right bitch to say the least.