Does anyone know if you can you put an R56 front grill on a R53?

 

doubtful, for the front end was redesigned for the Euro ped crash standards and the grille proper looks much bigger. However, maybe one could cut and fit one in with a little work and TLC, but there are two sections divided by the bumper cover so that'd be problematic. Worth a shot I guess, the grille can't be that pricey

 

There's no way....totally different shape. Much smaller than the r53

But the stock r56 MCS grille is basically just the r50/r53 aero grille if you want that mesh look.