I know a guy named Jeff DeBuhr from IL that has a 89 that looked just like that-- before he started modding it. His has red interior, what color is yours?
Jeff did a atx to ZF6 conversion in his garage on jackstands! He also has full 96 bodypanels on his-- except the back fascia is one of only two (at the time) C5 styled rears for a C4. Also Grand Sport wheels and a Black Grand Sport stripe. Nice car... L98s are great engines, if you like torque (and who doesn't???). He was running mid 13's on street tires last time I talked to him. He worked on my 92 Z28 a few times when he was part-owner of Chase Racing (now defunct).
cool car, nice guy...
http://www.vettextc.net/modifications.htm