We ended up using a breaker bar to get that bad boy loose. Just take a larger diameter pipe and place it over your torque or socket wrench and pull. Thats how i loosened up the bolts that tie the hitch into the frame.
Go down to home depot and buy yourself an electric impact gun. I got the dewalt and it broke those loose with ease. I think I paid 200.00 dollars for it. It will be money well spent for future projects. I like the electric because I didn't want to buy a compressor big enough to run one. Oh, almost forgot, get a swivel socket adapter to fit in those tight spots.