So you'll wire up resistors to the leds you just got? Well, if this works, we might just have to stick with the resistor thing.
EDIT: what about these bulbs with resistors attached?
http://www.hid-lights.com/cat/LED-1157.htm
scroll all the way down, the 68 LED bulb in red?
Ohh crap hold up, scratch that one above, check this out!
http://www.ebay.com/itm/2x-CANBUS-ER...-/300780205297