Volvo: 1996 960 suspension, ball joints, favorite shop

Question
i recently replaced the bushings in the front control arms along with ball joints.  i still get a little vibration in the steering wheel. it has done it with a couple different tires.  am getting front alignment tomorrow.  any suggestions?  also i'd like to replace some bushings in the rear suspension.  which ones? are there any diagrams or can you tell me how or where to purchase parts?   thank you

Answer
Hi Kenton,have you checked the wheels for damage?,could allso be in the steering link,in the rear there is mainly one bushing to replace which i know of,below is a number of  the bushing in my favorite shop in USA.
L2006-75526
http://foreigncarpartsonline.com/