I too have the invisimask on my Boxster and it looks great but I wouldn't cut it just to install  

   I found a local installer who first wanted to put on the 3M but they have too much orange peel.  So I negotiated w/ them and said if I supply the mask/shield I want, how much for install - ended up being less than $150 (bumper only).  Get a recommended installer from their site or here: 
http://www.clearbrafilms.com/installerdirectory
Good luck 
