Yes, they're true HID ballasts and bulbs. A 35-Watt kit with H4 size bulbs can be had from eBay for under $40 these days, and a 55-Watt kit isn't much more. The housings I mentioned in that other thread are still available from
Truck Accessories @ RealTruck.Com - Free Shipping & Big Smiles for $38 each with free shipping (so that's just under $160 for all 4 housings). I only upgraded the low-beams, but to do the highs as well is not much more. Some notes and recommendations: if you use a 35-Watt kit, you don't really need a relay setup because they draw less current than the stock 45-Watt incandescent bulbs, but some people like to use relays anyway. A 55-Watt HID kit will draw roughly the same current as the incandescents and they'll be brighter than a 35W, but they spike at start-up, which may wear down your headlight switch after a while, so I would recommend using relays. I'm pretty sure Puttster can help you with finding a very inexpensive relay wiring kit. Some of them come pre-assembled and are good quality for not much money. For the high beams, I suggest a 100-Watt H4 size halogen bulb (maybe $5 or $10). I'm not sure if you'll need a relay for the high beams or not because I haven't changed mine yet (the previous owner put 65W sealed beam halogens in and they work fine for now). All together, the whole thing should cost less than $300, and it's really easy to do yourself, even with little or no experience.