The ’71 model is close to identical to the ’70 model. The only major changes are a new resin process to change the body, and a different interior was developed. Also, the compression ratios were lowered to allow lower octane fuel. Standard features were the same as previous years. 1949 Corvettes were sold with the LT1 engine, eight of them being in the ZR1 model. Majority of the ’71 models had power steering, four speed manual transmission, and air conditioning. Less than half came with power windows or tilt steering wheels. Zero to sixty clocked in for the different engines as the following: L48, 7.1 seconds; LS6, 5.3; and the LT1 came in at 6 seconds.