Wow, thank you all guys.
hyperkid -- for $500 I don't see many of VX owners getting those mirrors unless they play DVD, have built-in Bluetooth and Navigation and get you out of tickets. Even then, it'd be more suitable on an Escalade.
Riff -- thanks again for your valuable feedback on tires, I'm really hoping to get 2k miles out of the tires currently installed on the car so that I could get the new tires on closer to home. I'll see which ones will be easier/cheaper to get between Nitto NT404 and Geolandar as I've heard a lot of good comments on both these models previously when I had a little truck. However if trimming is that easy I might as well go for 285 tires as they would provide more grip especially in rain/snow.
KAT -- Finally!!! I've seen the similar button in a similar location on one of the VXes here in WA (which I passed on because it was too rusty) and both me (understandably) and the dealer (surprisingly) were clueless as to what did it do!Well, now I know.
And thanks for the programming instructions. I also wanted to share the tire calculator I've used: http://www.kouki.co.uk/utilities/vis...ize-calculator not because it's better or anything, but you know, some sites go down from time to time, it's nice to have options.
Rick -- thanks for the feedback on trimming, programming and the backup cam sizes.
I realize it might not be the smartest move to plan putting that many gadgets (immobilizer, backup cam, tpms) in at the same time, but if I end up removing dash -- then why not.
I'm concerned about the immobilizer tho. I believe to be counted for an insurance discount it has to be passive (auto-arming) and it has to cut both the ignition and the fuel-pump power supply and I'm having problem finding a suitable system even within $200-$300 range. I've checked the usual suspects (clifford, viper, pyton) but there's surprisingly very little information about the immobilizer feature (or maybe it's not worded in layman's terms I'd understand). Anyone has any feedback?