Truck shaking horribly

[bbchevy]

I just swapped in a D60 in the place of my old 44 front axle. Ever since the swap, my truck will shake out of control when i hit a bump. its so bad that it feels like the axle wants to rip out. I have replaced the whole tie rod, drag link, king pins stuff, wheel bearings, calipers and rotors, etc. if i put another stabilizer on it, the shake will die down alot... but it wont go away. what could it possibly be. i never had this problem with the other front axle. And i have the same wheel and tire combination as i did before. I am so confused.... and im getting very frustrated. I need help. thanks guys

-Scott