I'm looking to buy a 2010 Volvo S40 R-design, found one with a silver metallic color, preferred package (moonroof, keyless entry, power front passenger seat), climate package. However it does not have the dual xenon headlights with Active Bending Light (ABL). My other option is to go with a black V50 that has the dual xenons with the ABL. I was wondering if it would be a big hassle to get the dual xenons installed in the S40 after I purchase the car? Hopefully its not a difficult install.