If I recall correctly, the guy who owned the car in the pics (he has sold it since) dropped it, put the alloys on and the german plates, then polished it and went to shows...the paint, chrome and interior was all original.
If you do want to convert your bumpers, budget for £100-£150 each for the bumpers, £10-£15 each for the four endcaps, £12 each for the four bumper brackets, plus assorted bolts and screws.
As for the grille, not only do you need to try and find someone willing to sell one, but you also need a grille badge, bonnet trim, bottom trim, wing trim x 2 (best find someone who breeds rocking horses

) and assorted obsolete trim clips and fittings...