I have got one of those oddball trucks
1997 XLT CNG. Pretty much a F150 branded as a F250.
I have the 7 bolt hubs and want to adapt them for 8 bolt. I have looked at most of the wheel adaptor sites that sell these but there seems to be no listings for this config. Seems to be everything else but.
Anyone know where these can be got??
Or, how much would it cost to upgrade the hubs to 8 bolt?
Thing is, i have several sets of nice rugged looking Hummer H1 wheels and tire combos i would like to use but cant because of the 7 bolt issue.

 

ya I have never seen a conversion spacer like that I would think the only way is to get it converted from the rotor and hub

 

You might try finding 7 bolt 16.5 wheels instead.