There are a lot of similarities for the 71 but there are many differences. The book would help you a lot and since I just finished a 1971 4 speed bench seat road runner that won 1st at this years Mopar Nats you can always PM with any questions you may have on your 71.
69 Road Runner vert 69 GTX hard top 70 Road Runner 4 speed 70 Hemi Cuda vert