If you change your suspension to the 2003 and up Panther platform IFS (Independent Front Suspension). You will be changing your front lug bolt pattern to 5 X 4 1/2" from the original 5 X 5 1/2". Several here are also looking at installing the 93-98 Lincoln Mark VIII, Cougar & 89-97 Thunderbird 8.8" IRS (Independent Rear Suspension). Be ware many IRSs ARE NOT 8.8 (V6 T-Birds and Cougars had the 7.5s). The 8.8 IRS creates a mis match as the bolt pattern is 5 X 4 1/4". Gary (Project 55) says the Thunderbird is narrower than the CV IFS so a 1" spacer with the correct 5 X 4 1/2" corrected his mis match. Since Mustang Cobra IRS hubs are a direct fit this is another option as Cobras have 5 X 4 1/2" but those hubs are going from $120 up each, plus you need to replace the wheel bearings at $30@.
My Mark VIII I did a little differently. I contacted IRS Machining Services
irsmachining.com and had my perfectly good lincoln hubs redrilled to 5 X 4 1/2". For $75.00. I bought the recommended Dorman lug bolts (610-252) and had to pay shipping to them.

 

You guys never cease to amaze me. It seems like any obstacle no matter how daunting it may be, you figure it out . Very cool.