None of the links work, but I'd recommend the following (instead of the Haynes manual, which is WAY too generic):
Corvette Shop Manual, 1966-82
1968 Corvette Assembly Instruction Manual
1968 Chevrolet Chassis Service Manual
Corvette Restoration Guide, 1968-'82
1968-69 Corvette Technical Information Manual & Judging Guide
All of the above are available from the NCRS on-line store at
www.ncrs.org. The TM & Judging Guide will tell you exactly what it's supposed to look like, the Restoration Guide will help you get there, and the Assembly Manual has ALL the detail.