Ok... Just did a bunch of searching and research on this to see if I could "know for sure". Here's my post from the other rim thread:
I'm sure you could probably still buy them from Ford (tho they'd cost a pretty penny) I've seen a bunch on Craigs List as pull offs and I know here on "junk yard row" there's a couple of rim places that have full sets. I don't know of any real aftermarket vendors you could pick them up from tho.
I've seen in my area a bunch of '08+ 20" rims being sold as pull offs (a lot more '10 - '11s recently) from people buying the trucks and replacing the rims right away so the tires even have 80%+ tread on them too. To the best of my knowledge the backspacing and lug dimensions of the '03 - '11s should be the same.
Ok... So just to make sure, I hopped on to TireRack real quick and did a quick search based on year.
ATX Crawl Rims
2004 Super Crew 4wd:
Offset: 00mm
Backspacing: 5.00"
Bolt Pattern: 8-170
Rec. Tire Size:275/65-20
Weight: 36.0lbs.
2006 Super Crew 4wd:
Offset: 00mm
Backspacing: 5.00"
Bolt Pattern: 8-170
Rec. Tire Size:275/65-20
Weight: 36.0lbs.
2009 Crew Cab 4wd:
Offset: 00mm
Backspacing: 5.00"
Bolt Pattern: 8-170
Rec. Tire Size:275/65-20
Weight: 36.0lbs.
2011 Crew Cab 4wd:
Offset: 00mm
Backspacing: 5.00"
Bolt Pattern: 8-170
Rec. Tire Size:275/65-20
Weight: 36.0lbs.
So based on the above information, the same rim size, backspacing and lug bolt pattern will fit every year F250 from 2003 - 2011.
Based on the information I found around the web. The problem with 05+ rims going on the <05 trucks is the backspacing. The stock backspacing on the <05s is 4" while the 05+ is 6". This is due to the difference between the coil and leaf spring front end differences. From what I can gather, the only way to fit any OEM 05+ rims on a <05 is to get a 2" spacer otherwise they will rub at or close to full lock. Other than that they will bolt right on.
There are a number of wheel spacers on ebay going for about $100 for a pair.
TLDR: You can fit 05 – 11 rims on a <05 but it will require a 2" spacer otherwise the tires will rub at full lock due to the change from a leaf spring front end to a coil spring front end in 2005.