You can get front receiver hitches without replacing your bumper. Mine is Curt. Reese also makes them. If you were wanting to replace your bumper, I apologize as my input is of no value to you.
Happy New Year.
'11 GMC 3500hd SLT DRW D/A 4x4 Spray-in, Air Bags w/comp & controls, TL, Superhitch, 48" Supertruss, 9.5t Warn, front rcvr, Fox Shocks, '11 AF 1140, DB, AC, Gen, Solar, Thermal Windows, Wardrobe, Rear & Side Awnings, 18' Lund/40hp Honda 4 stroke