Hi, I have a 75 sportster since 1976 all original including original paint, etc. At least I have all of the original parts. Now it is lowered and has a 4 inch rake. However, you shouldn´t have too much trouble finding the original HD repair manual. I´m at the office and it´s at home obviously, but I think the repair manual runs for HD sporty´s from 69 to 79, or something like that. 75 sporty´s are AMF products and 75´s aren´t covered completely but you can piece together between 74´s etc. Good luck.