Hi, you are bidding on a Very & Rare Vintage 1979 H-O Racing Specialties Pontiac Heavy-Duty Parts & Specs. The catalog is in good used condition.  The cover is detached from the text. It has yellowing and staining commensurate with its age and heavy use. I got it in 1979 while rebuilding my Pontiac 400 engine. It is an excellent reference and parts guide to all the vintage Pontiac performance engines.  It has been kept in a climate-controlled smoke-free environment ever since. Please ask any questions before you bid. Thank you very much.