TC,
These aren't the best examples, but they'll get you started until I can find something in my own photo collection that's a little higher quality.
The data plates for the 1969 L-88s and ZL-1s were a bit different than the rest of the engines in that they didn't include the compression, horsepower, or torque figures... Just "427 CUBIC INCHES L88" (or ZL1 as the case may be).
The center instrument cluster was basically the same as any other non-air conditioned '69 Corvette built... The L-88s did not have radios so a block off plate will be in that location.
Regards,
Stan Falenski