f 550
not sure where you got those #'s from, but i got mine direct from my ford builders book. it has every spec from the 250-550 and NONE have a 23k with any pkg
2005 SUPER DUTY F-550
PACKAGED OPTIONS/EMISSIONS
TRAILER TOW PACKAGE, HIGH CAPACITY (535) (Late
Availability)
Availability:
• Available on Crew Cab 176" WB Cab to Axle 60" only
• Requires 6.0L PowerStroke™ diesel engine and 4.88 Limited Slip
rear axle (X8L)
Includes:
• 7-wire harness with relays, blunt cut and labeled (for attachment of
after-market trailer brake controller)
• Increases GCWR on diesel engine with manual transmission from
26,000 lbs. to 28,000 lbs.
• Increases GCWR on diesel engine with auto transmission from
26,000 lbs to 33,000 lbs.
• Upgraded rear axle
• Increased maximum frontal area to 90 sq/ ft.
• Trailer Brake Controller not included
NOTE: Salesperson's Source Book or Ford RV Trailer Towing
Guide should be consulted for specific trailer towing or camper
limits and corresponding required equipment, axle ratios and
model availability. See Supplemental Reference for vehicle height
consideration.
auto trans
f550 2x4 drw 24,800
f550 4x4 drw 24,500
manual trans
4x2 19,800
4x4 19,500
these # are with a reg cab/ and a 1000 lb bed 6.0 eng. supercab and crew are less.



