a few other touches highlines have over standard VR6's is the A,B,C pillar trims are black not cream, there is a console aoround the handbrake lever. aircon standard climate was optional
Personally having owned a VR6 find the engine very heavy for cornering and also very thirsty on fuel.
the 16V although slightly less power is a far better all round car lighter engine for better handling and being only a 2litre better gas mileage.
however top spec 16V's are far harder to find than top spec VR6's