HMS just re-did their showroom. They have all kinds of safety gear in various sizes to try on too. They do specialize in BMWs, but can get performance parts for just about any car. I think they may close at 6 on weeknights, but they are open on Saturdays. Check their website (www.hmsmotorsport.com) or call them (888-467-3269).

Ok, so they do sponsor me ;-) but it's the only place I know where you try before you buy up in the North Shore.
Victor