i too have a silver PR5, standard/manuel with an InJen CAI but since the car is next to totaled it doesn't matter what i have, But what i can tell you, is that you will definatly feel the diffrence with the InJen CAI! Very noticeable throtle response, faster rev's and re-rev's and it also sounds great! heres some pics of my install
http://www.imagestation.com/album/?id=4291751555
only took me 45 mins, i used a 10mm (i think) socket, philips (cross head / +) screw driver, pliers (optional), it is very easy to install.
it was great for the 2 days i had it in, before it overheated!. then i uninstalled it and threw the stock air box in before i took itback to the body shop (took 30 mins), installed it once i got the car back then it over heated again so i took it out (25 mins) and again i threw the stock air box back in. man if my car keeps over heating i can do the install in like 5 mins!
BTW Don't let me problems scare you its accedent related

. Click here for accedent pics.
http://www.imagestation.com/album/?id=4291762667
1 thing though i live in canada and the ABS/Airbags are all standard equip on the car and also mine didn't come with roof racks. im guessing that the US models have that as an option and the roof rack not as one? my car costs $20600 CAD and i have only A/C. i didn't get the sunroof because i heard from other people that it tends to be noisy on the HWY and its also another window to clean
keep in mind, if you get the car
YOU ARE NOT ALLOWED TO GET INTO AN ACCEDENT!
hope our posts help with your decision!