I have been trying to find wheel specifications for my 1988 corvette with 17 inch wheels. I would like to know what the offset is and bore.  The only sure spec that I know is 17x9.5inch. Looking for offset, bore and lug circumference.  Thanks for any input.

Mirrock Corvette (mirrockcorvette.com) has a very comprehensive listing of all things associated with the C4 Corvette.  Go to the website, click on C4 Parts Guide, click on Wheels (or any other category you may be interested in), and you will find all of the info you need.