@calmotion Thanks! I sold the car back in 2008 and was pretty active on here in the old days. There are probably some old posts with the info you seek. I would have to rely on my ever failing memory, not advised.
If I remember right they were TSW wheels, can't remember the offset. I machined my own custom billet wheel spacers. The center caps are decorative.
Looks like they still make something very similar. Don't see a 17" size.
My goal was to do the flares justice and fit the widest rubber I could fit. I remember fabricating a wooden jig that bolted to the face of the drum/rotor that I could use as a datum to measure accurately to the inner fender lip on the outside and any chassis bits on the inside. I could also use the jig to verify the tire diameter/width throughout the whole suspension travel and lock-to-lock steering travel.
I also remember doing a lot of internet research to find the right combo to fit. I didn't want to do spacer/adapters but had to go that route. So the spacer adapters were pretty beefy and precision.
(Been so long that it looks like all my old posts are labeled "FORMER MEMBER" instead of my old account name. Makes it hard to find stuff.)
BTW: "There has been a lot of discussion here about how hard of a ride the 17 tire give." I didn't buy a Speedster for the ride! I couldn't feel the bumps over the smile on my face. Of course that was 15 years ago, and now I get stiff and sore after a hour in my Durango. 
