i'm currently rebuilding my block and i noticed that eagle rods doesnt have oil hole from the bearing to the side of the connecting rod.

is it advisable if i have it drilled to have oil line like that of the stock rods?

 

The hole is meant to aid in cooling and lubing for the piston. Drill it only if you have stock cast pistons. Otherwise forged pistons require less cooling and a bit less oiling, especially when they're coated like Wisecos and others.