Loz.

i got mine half wrapped didn't make a huge difference i bought a custom made heat shield for it simple to do if you know someone that can make one you can use mine as a template if you wish

another way to let out some of the heat is what myself and Dan have done and that is to remove the rubber bit at the top of the bonnet it lets a bit of hot air out through the gap.

If you want it heat wrapped get it done by someone who knows what there doing and with the gap you got to do it whilst its on the car better off doing off the car to be honest.

Hope that helps