I used superbrightleds.com. Ended up being like 21 and change shipped. I bought 4 211-2 blue bulbs. 3 for the dome light, 1 for the trunk. Will let you guys know how I like them once I get them. To get the dome light out, dont you just pinch the front and back sides and pull down?
Haven't done any Taurus mods yet, but I used superbrightleds.com to order 4" round white lights for reverse lights for my other car and they turned out fantastic. Great company, quick turnaround, cheap shipping.