4 Speed Clutch Cover Identification

[garrett1308]

Have a clutch cover that I am unable to identify. Wondering if one of yall might know what it's for. Only numbers on it "480 E38" stamped into the long, flat, straight segment of flange. Fairly certain it's Mopar.
Info is much appreciated.

 

[R413]

Small block, 1970 and newer aluminum bellhousing. My 1970 340 cover is 15” across the bolt holes and the outside is 16” wide. I’ve been told this one you,have that’s wider is a truck cover.