Hi Mustangs ... Here's a link to the most complete production breakdown I could find for your Stang (http://www.mustang-blogs.com/2006/02/20/1970-ford-mustangs/#more-131) ... Unfortunately it doesn't show a breakdown by engine. However on another site I found this nugget which may give you a lead to someone who can get you that info ... Good Luck ... "1967 through 1973 is a completely different story. Very accurate production figures are available by color, engine, interior, options, etc. This detailed information is available through Marti Auto Works (623-935-2558). The nice people at Marti Auto Works can provide just about anything you want to know about 1967 through 1973 Mustangs. They do charge a fee for their reports but the prices are very reasonable and the documentation very valuable when documenting your Mustang's rarity."