The connecting rod should be renewed along with the other components that make up this assembly, including amongst others; bearings, bolts, piston, piston rings, piston pin and the piston pin retention circlips - all pretty much essential when rebuilding the engine.
Interfacing new parts with old will cause the new parts to wear prematurely and lead to a less than satisfactory outcome - the superb engine this part suits is worth spending time and money on - if you want it to continue being superb?
This component and perhaps quite a few of the parts listed below maybe required for a full crankshaft/piston assembly rebuild: