When we bought our camper, I tried to use my old 750# bars on our 32BHDS with probably 11-1200#s of tongue weight. When we hooked up, they didn't look bad, but after we drove around the build and everything had settled out......Granted, I only have my 1500 Silverado, but they were at such a severe bend I figured that if the trailer took a good bounce I would snap the bars they were that bent. Figured worst case scenerio, I was going to spring the bars to the point they would be ruined. I told the salesman to get me the proper set. They sold it to me at cost. Got the bars, brackets, and hitch head for $300. I pulled back around the building back to the garage area and we did the swap.
1999 Silverado 1500 ECSB 4x4 5.3/3.73s
2009 Jayco 32BHDS