360 vs 383

Trick Flow Heads
383 - 1399.99 240 cc Trick Flow Specialties TFS-61617802-C00 Trick Flow® PowerPort® 240 Cylinder Heads for Big Block Mopar | Summit Racing
360 - 1107.99 190 cc Trick Flow Specialties TFS-61417801-C00 Trick Flow® PowerPort® 190 Cylinder Heads for Small Block Mopar | Summit Racing