sct magnaflow udp v6 3.8

Hey everyone! So I just finished my 100K tune up on my 99. Oil, filter, cold air intake, plugs, wires, ignition coil pack, fuel filter, differential fluid. The only bolt on is a CAI. I put it on last summer. It is a 3.8. Manual with 3:27 gears. Im ordering a SCT Tuner from AM this weekend...