They are the exact same casting (front and rear), they got a -4 or -5 for the part number (stamped on the box) to differentiate between the 4-hole and 5-hole.

Mike B smile

Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
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Silver Spring, MD