Easy to see the date code on the back of the motor.
Right side below head on block.
GEP's date starts as numbers then letters, an " H " for 2001, or J, 2002, K, 2003, and so on.....L, M, N, P.....etc.
No code I, or O.
So...11 03 L is a : nov. 03 2004 cast date motor.