91 integra ls gutted, one seat, gutted. b16a, mugen chipped ecu, itr cams, dc 4-2-1 header, full exhaust, no cat, and a N.O.S. 75 shot dry on street tires and stock ls tranny. also what size exhaust should i go with and which header should i go with, 4-2-1 or 4-1. the b16 has no torque and the 4-2-1 makes more torque but the 4-1 make high end hp and thats what the b16 is known for . which way should i go?