Engine codes

[deanos70]

Just wondering if this code stands for anything, i have a vx 2002 series2 3.8 eco motor to go into a hilux, on the rear side of the motor is stamped,

*L181*
*GM-7* and also 3800G and GMSMCO

what about the code at the start of the engine number VA202*** last 3 numbers left out for obvious reasons

thanks guys