LB9 speedo unit. The car checks out by the RPO codes and SPID as a true IROC-Z. It was a factory LB9, 2:73 positrac drum rear, 700R4 trans, Bright Red. Also cool is the emblems were in it, since the 1988-1990 style are pretty hard to replace. The interior needs a headliner, carpet, seat covers, console armrest, and dash pad, but is otherwise intact. It's in rough shape, but according to the RPO codes it's all there.