I highly recommend BDS, I have it and pull a 32ft flatbed gooseneck and cattle trailer pretty often and have ZERO complaints, pulls like a stock truck.
2008 LMM CC/SB 54k.. Leveled Cognito keys, UCAS, Gauges, 22s 35s, 5in Flo Pro, Hideaway, Bed liner, DPF Delete, EGR delete.
SOLD: 05 LLY CC/SB 130k.. Leveled 4.5in BDS, 20x12in moto metal 962, 35 toyo mts, ATP tunes, EGR delete, PCV reroute, Airdog II 165, Mbrp 4in turbo back straight stainless 6in tip, LBZ mouthpiece, AEM Brute Force intake, Pioneer Double Din, TVs Headrest, 5% tint, Hide-Away Gooseneck