removal of stripped bolts in locking hubs

[yellowgmc]

hey guys. i realize this is a question regarding my ford, but locking hubs are locking hubs. here's my problem. i'm trying to change the u joints in my front axle. 4 bolts are stripped out from the PO. i've tried the correct size allen key, pounding a screwdriver bit in, easy outs (snapped off). i've been using penetrating oil (swear i heard it laugh at me). i'm not worried about hub body damage as i'll be installing warn units next summer. i need to change the joints before winter tho. and before it gets any colder. thanks