Well now I'm really confused.....

I just got back from the salvage yard, and I saw trucks with 15 inch wheels that had three clips and some with 6 clips.

It appears that the Task Force Trucks used the 3 clip wheels and the AD trucks used the 6 clip wheels. Is this correct?

Are the 15" TF wheels 5.5" wide like the 15" AD wheels so I could "mix and match" on the same truck?

Can the AD hubcaps be used on the later 3 clip wheels? OR, will only the TF hubcaps work on the 3 clip wheels?

Any input appreciated!
Steve