center cap help.

i have a set of eagle alloy 168.they are the 95 cobra r style wheels.the caps measured 2.5 inches.will these fit?

http://www.americanmuscle.com/20corcecap.html

i would hate to spend my cash on a part that won't fit.any help would be great.here's a pic of my caps,they look ok but would love the cobra r's.

View attachment 326620

thanks.