69' Boss 302 suspension/steering prob.
i am stumped iam restoring a 1969 ford mustang boss 302 and EVERYTHING in the suspension and steering have been replaced with HIGH QUALITY parts except the gear box and the slave cylinder. My problem is that when i hit a low spot in the road (man hole cover, patch of pavement...) the car will shoot usally to the right but also the left and then correct itself and go on down the road. The REALLY keeps me on my toes when i drive the car and i cant do much over 40 for fear of loosing control of the car. its had a REALLY good alighment done on the car so i know thats not the prob. and all the parts are tight. any help would be awsome