Guns and cars are in the headlines this morning thanks to several Southland crimes last night that are being investigated in the morning light. First, in East L.A., a large house party was held last night on the 500 block of South Hoefner. It had been promoted by fliers and handouts all over. But in the midnight hour things turned deadly when a suspect opened fire with a handgun, striking 18-year-old Jeffrey Alvarado "in the......