Going old School ??
It says K on the tranny spot !!
<TABLE cellSpacing=0 cellPadding=0 border=0 x:str><TBODY><TR style="HEIGHT: 12.75pt" height=17><TD class=xl26 style="HEIGHT: 12.75pt" height=17></TD><TD x:str='Built from 1966 - 1979 20" long overall including integral bellhousing. '>Built from 1966 - 1979 20" long overall including integral bellhousing. - </TD><TD style="mso-ignore: colspan" colSpan=8></TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD style="HEIGHT: 12.75pt" height=17></TD><TD class=xl26 x:str="1966 - 75 have rectangular pan with 17 bolts & long measurement on front and rear edges. Shorter on sides. ">1966 - 75 have rectangular pan with 17 bolts & long measurement on front and rear edges. Shorter on sides. - </TD><TD style="mso-ignore: colspan" colSpan=8></TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl26 style="HEIGHT: 12.75pt" height=17></TD><TD class=xl26>Can have recess on rear pass.corner or slight buldge on pass side near rear edge & 15 bolts. </TD><TD style="mso-ignore: colspan" colSpan=8></TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl26 style="HEIGHT: 12.75pt" height=17></TD><TD class=xl26>P1966-75 pan = 1"-1.5" deep. 1975+ pan = 1.75" - 2.0" deep and 4X4 pan 3" deep in center. </TD><TD style="mso-ignore: colspan" colSpan=8></TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl26 style="HEIGHT: 12.75pt" height=17></TD><TD class=xl26>Small blocks and big blocks have different bellhousings. 3 different castings total. </TD><TD style="mso-ignore: colspan" colSpan=8></TD></TR><TR style="HEIGHT: 12.75pt" height=17><TD class=xl26 style="HEIGHT: 12.75pt" height=17></TD><TD class=xl26>P-R-N-D-1-2 pattern. Good, heavy Duty 3 speed Auto, but without OD. Gets 3 thumbs up.
Here is a link:
https://www.ford-trucks.com/article/...ers_Guide.html
</TD></TR></TBODY></TABLE>




