Have 01 F250 with 2 pallets of brick that was OVERLOAD for 200k miles 5.4L with bad tran. It hold fine. Forgot to get picture. We guess it was around 4-5K lb.
95 F250 1 pallet of brick but PO didn't think how to build flatbed with steel near to rear tire so I only can hold 2,800 lb without rubbing steel.
00 F350 2wd diesel It hardly overload it never ever move inch low.
01 F250 V10 4wd that went to car crush due rot. leaf spring been replaced before.