Tony'sG37

I recently purchased a 2009 g37x with navigation and I absolutely love it. The only problem is so does my fiance and her 2008 Lexus is250 does not have navi and now she wants it installed. I found a great integrated navi product made my Fly Audio that takes the place of her existing console, but want to make sure that the install is done correctly. It doesn't look too complicated, just time consuming, but I promised her I wouldn't attempt it so now I am looking for a reputable place that would install the product if I brought it to them. I live in Westchester, NY but am willing to travel a bit for a good installer that has reasonable prices. Thanks for any info you can give!

Here is a link of the product:

FLYAUDIO CORPORATION--Lexus IS250