I went to them for a quote. I took my factory subwoofer and box in and the guy behind the counter said it would be a problem. They gave me a quote for $89 to replace a bad subwoofer in my truck. When I came back to get it, he tried to charge me another $50 for install. 8 screws and your done. I remove the 8 screws and told him to keep his speaker. The speaker he replace it with was a used one also. He a very shady individual and his two man staff are two teenaged highschool drop outs that jerry rig things to work instead of correctly.