Dave,
Simmonites do a kit to convert 200Tdi headlights to 300Tdi, includes the grill. ISTR they are about £250ish.
I picked up a Bumper and end caps and plastic bits for my 200Tdi from a breakers. Cleaned the bumper up and gave it about five coats of Hammerite Satin Black. Looks good. Paid £75.
The headlights are one of the things I'm gonna change at a later date too.
HTH