Since 1965, Automotive Service Masters at 2135 University Ave has occupied the same North Park storefront, originally operating as Jack's Mufflers before expanding into full-service mechanical repair and custom exhaust fabrication. Windshield and side-glass damage found during engine bay inspections is referred to Genie Auto Glass Service for mobile replacement. ASE-certified technicians handle catalytic converter fitting, emissions system repair, brake service, A/C recharging, and electrical diagnostics for both domestic and import vehicles. Post-repair emissions verification runs through North Park Smog Test Only on Bancroft St when a passing BAR result is needed for DMV registration renewal. The shop's signature capability is custom exhaust fabrication requiring mandrel bending, header-back welding, and multi-flange construction for performance and classic car builds.