i used some lock actuators i got off ebay, along with my code alarm and a double pole double throw relay i got from radioshack.
i also used the sunroof button on my OHC for the lock/unlock button.
if i had to rate the difficulty i would give it a 3/5, all depending on how much you know about electronics.
just looking on ebay i found a few things.
heres a kit, http://cgi.ebay.com/ebaymotors/2-Doo...spagenameZWDVW
and heres the lock actuators like i have.
you could use the alarm part out of the car but i have no idea how the wiring would work or where it even is so i cant help much with that.
im almost positive you wont be able to use the actuators that are in the car right now, most are built into the lock mechanism itself.