For anyone wanting to try the mesh fitting here is how I did it.
Mesh from ebay
http://www.ebay.co.uk/itm/300974645170?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
Cut template along the top edge of the lower chrome strip, then up the middle of the last two grill slats (ignore the small triangles missing on the top corners the card was not big enough cut straight up), along the top cut level with the top part of the chrome, leaving two large tabs to fit to the plastic push rivets.
Cut mesh to template, alone the bottom bend 5mm of the mesh at a right angle to the very ends.
To fit the mesh remove the black cover from the top of grill, two torx screws and four plastic rivets (pull the center posts up and they will come out can be reused), hold the grill one end and pull and wobble the cover and it will come off, work along till is off.
Before fitting the grill you need to fit the bottom fixings I used 1mm galvanised tying wire. Cut a piece about 150mm and use this to make the holes for the lower fixings 6 arrows along the bottem.
If you look inside you will find at the bottom of each slat a flat behind them, I used the wire heated with a lighter to melt holes through the plastic, then fitted a long length of wire through the hole pulling the top part out of the grill. the outer edges of the mesh are held by a rubber flap each side (already there).
Put the mesh in pushing the bent lower section into a small groove at the bottom of the slats, this part is a fiddle, then when its looking right take the wires at the front and put them through the mesh as low as possible behind the slates, then twist tight with small pliers and remove excess.
The top is then pushed into the top groove the there are three tabs that can be drilled and the mesh wired to them, plus the black cover will hold it if you push the excess under the top lip, the two tabs I cut on the top bend over and lay where the plastic rivets fit the top cover trim them to length just past the holes,
Refit the top cover and push the plastic rivets through the cover and mesh (the holes are the right size for the rivets).
Job done all you need now is a plaster or two on your arms and wash the blood off the grill