The early morning, late-November sun began to come in low and slow and cold and pale over the railroad bridge at the Dockett Street commuter-train stop on the Dedham-West Roxbury line, cheap-glittering the dirty windows on the southerly side of the yellow cinderblock auto-body shop - the sign on the roof in tall, hollow, red-plastic letters read: BUDDY'S YOUR BRUISED CAR'S BEST BUDDY - and Dell' Appa writhed in the passenger bucket seat of the blue-and-white Chevy Blazer.