2001 Toyota Corolla Unstable ride

Hi.I recently fitted, new tyres, springs, shocks, tie rod ends, ball joints, inner and outer C V joints and controll arms, including 2 back wheel bearings. Checked the engine mountings, seems fine. I'm getting a very unstable ride, can feel almost every bump on the ride, car shakes alot, at a speed of 20 to 40 car shakes and then after 80 and upwards. I balanced the tyres and did alignment, still the same.I feel that I spend so much of money only to find out that the problem still exits. Please tell me whats going on. Thanks.