HID Headlight conversion

I would love to have some bright HID's in the old mopar....I have them in my truck for work and the difference is amazing and will never run without them again.
Has anyone installed a kit like in the link below? And if so, any issues, other than maybe needing to upgrade some old mopar wiring? LOL

http://www.ebay.ca/itm/H6024-7-HEADLIGHTS-CONVERSION-TRUE-HID-8000K-HI-LOW-BI-XENON-BEAM-35W-BALLAST-/400243148405?pt=Motors_Car_Truck_Parts_Accessories&fits=Make%3APlymouth|Year%3A1973|Model%3ADuster&hash=item5d3059c675

Thanks in advance,

Curt