Find someone with some mechanical skillz who actually knows what they're doing...
Did you actually take the nut off the other end of the bolt?
Did you totally lift the truck off the ground?
Did you take the wheels off to minimize overhang load on the front axle?
Are the bolts rusted? Any visible rust at the edges of the bushing?
Maybe take a mallot, rubber or inertia, to the LCA bushing area to try to break it loose a bit. Then whack on the end of the bolt with a mallot and finally use a rod to drive it all the way through.
One thing you might try, and it helped with my removal. Get a ratchet strap and attach the LCA on the side you're working to the frame on the other side of the truck and Titan it down. This will keep the LCA from "sliding" towards the wheel and putting undue pressure on the bolt.
It seems you just have a tough bolt there.... Good luck.