Vauxhall's replacement for the aging Vectra, the Insignia, debuted last year. Built on GM's Epsilon II platform, the Insignia has been extremely well-reviewed by the press, even managing to grab the prestigious European Car Of The Year award in 2008. It's a big step up from the old, slightly dull (if competent) Vectra, but the standard styling leaves a little to be desired.  Enter Irmscher, a German tuning firm that has been working on Opels and Vauxhalls for going on 40 years now.  They have a few bits and pieces for the new Insignia, to increase it's curb appeal. The body modifications are blessedly tasteful.  Well-formed side skirts, a sporty front valence, a rear spoiler and a rear valance housing quad exhaust tips give the Insignia a