Take a look at this. This is for 97 4.2's.
HTTP://www.alldata.com/TSB/20/97201BX.html

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97 std. long bed
cat back
2-4 Ground Force drop
6-way power adjust seats
w/power lumbar
Pioneer in dash CD w/4 100w. 3way Pioneer 6X9's
Pretty plain mono-chrome white. http://troy.f150online.net