I don't think you can even buy Keyless entry kits anymore, and if you could, why.
The reason is the price of car alarms have came down so much, that you can buy a car alarm and either install it or have it installed for about the same price as the old keyless kits.
I think even junk alarms come with the capability to lock and unlock doors.
If you don't already have power locks you need to buy the lock unlock solenoids for about 20 bucks.
I have had keyless trunk and doors on my car for about 4 years now. I don't know how I lived without it.
P.S. once you have keyless you will probably never lock your keys in your car again. As you always lock the doors with the key fob, so you always have the keys in your hand when you lock the doors.
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