I have the following GM tech books for sale as a unit...1990-1993 Corvette RPO LT5 (5.7 DOHC) supplement......Gen III V8 Powertrain Controls......Corvette 5.7L (LS1) Powertrain Controls.....1992 Chevrolet Corvette LT1 Fuel/Emissions....lastly. Shop Manual Corv... Login to read more.