We present results from 1.4 and 5 GHz observations at matched resolution with the Karl G. Jansky Very Large Array ( VLA ) of 11 powerful 3C FR \mathtt { II } quasars . We examine the 11 quasars along with a sample of 13 narrow-line FR \mathtt { II } radio galaxies and find that radio-loud unification largely holds but environmental effects can not be ignored . The radio core prominence , largest linear size , and axial ratio parameter values indicate that quasars are at relatively smaller angles compared to the radio galaxies and thus probe orientation . Lack of correlation between statistical orientation indicators such as misalignment angle and radio core prominence , and larger lobe distortions in quasars compared to radio galaxies suggest that intrinsic/environment effects are also at play . Some of 150 MHz observations with the TGSS-GMRT reveal peculiar lobe morphologies in these FR \mathtt { II } sources , suggesting complex past lives and possibly restarted AGN activity . Using the total 150 MHz flux density we estimate the time-averaged jet kinetic power in these sources and this ranges from ( 1 - 38 ) \times 10 ^ { 45 } erg s ^ { -1 } , with 3C 470 having the highest jet kinetic power .