They are 17x7 with 4 1/4? back space??? I think.I talked to him about them a few months ago.
Edit: His name is DVJCUDA,here is what he sent me:
- car is not modified at all to fit the wheels
2 - Front
Wheel Brand Coys
Size 17x7
Backspacing 4.25
tire size 225/50/17
Suspension mods big bolt from 74 dart sport
Rear
Wheel Brand coys
Size 17x7
Backspacing 4.25
tire size 255/45/17
Suspension mod ss springs and poly bushings
weight - they were the same weight as my 14" steel wheels wth 245/60/14's and I forget the exact weight right now
improving handling? yes, but I have poly bushings all the way around and front and rear sway bars... so it all works together.