Difference between engines 1 & 4 of the boeing 707

From:         "Marcelo F.Cosi" <mcosi@embratel.net.br>
Organization: CompuBrasil
Date:         10 Dec 95 02:51:45 
Followups:    1 2 3 4
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Does somebody know why the engines-arm were different in most of the
707's?????