Hello, Unfortunately, I have been unable to find this information on line. I would recommend purchasing a service manual. Here is a link to a number of Ebay auctions for this product: http://search.ebay.com/search/search.dll?sofocus=bs&sbrftog=1&from=R10&submitsearch=Search&satitle=1972+celica+manual&sacat=-1%26catref%3DC6&sargn=-1%26saslc%3D2&sadis=200&fpos=ZIP%2FPostal&ftrt=1&ftrv=1&saprclo=&saprchi=&fsop=1&fsoo=1 Best of luck! CarGrrl
i have lots of parts for those early celica's if your interested
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