JMS Automotive and Collision in roxborough does lifts ( jmsacc.com ) , but their suspension parts supplier is ATS Springs , and I believe they install their own products as well . We have been doing business with them for about 4 years now . They are the only place you want to purchase your suspension parts , they're reputation is outstanding and includes a knowledgeable staff .
ATS Spring would be my bet
Thanks! Your answer is awaiting moderation.