Decoding F4ZP , the F tells the decade it was made in, F= 1990's, 4 is the year of the decade. So, the F4 part of the number designates 1994, but it is common to see Ford use the same part for several years. It could be a AODE 94, 95, or early 96 Mustang transmission or an late 4R70W 96 Mustang transmission. Also the 4R70W extension housing says W on it.
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