viper 5701 with 2008 subaru outback

I bought a refurbished alarm/remote start and am looking to get it installed. Since i am not comfortable doing the work myself, I've called a few places and have gotten conflicting comments. One guy is telling me i need two additional components other than the 5701 and the total install would cost me $450 (that's without the alarm that i already paid for), and I'll need an additional key. Another one tells me it'll be $225 for the work and an additional $100 for the bypass ($325 total). No mention of a key needed My question is this: Besides the 5701, what additional parts do i need to have remote start capability as well as alarm functionality? Are there any bypass units available for this car that don't require a key? I've been trying to research the forums but there isn't any information that i can find to answer this specific question. BTW if anyone knows a CT installer that is willing to do it for cheaper, I'd be appreciative of any contact information! Thanks, Andy