1996 Dodge Caravan power brake booster removal.

Brakes problem
1996 Dodge Caravan 6 cyl Two Wheel Drive Automatic

i have removed everything short of removing the engine itself. I have removed the four bolts holding the power brake booster and all hoses and master cylinder from the brake booster but it still refuses to come out. I also disconnected the linkage to the brake pedal. Is there a trick to loosening the booster? I am layed off currently as are many americans and cant safford to take this problem to a certified mechanic.