Keyless Entry

[Dopefish]

I have a 1995 Nissan 240sx 'base' that I'm trying to make nice and *new*. My first stop is the interior and while I have everything stripped I want to add keyless entry (preferably OEM). I can easily get ahold of an aftermarket system but integration is my focus and the OE system would better suit my needs.

I have a 1996 Nissan 240sx 'SE' model (I assume all SE's came standard with keyless) so I'm hoping I can convert my car to keyless using these parts.

I am going to strip my entire interior (including dash) to clean up and put new carpet and headliner in. At this time swapping then entire interior harness would be easy. (if needed)

from what I've gathered the keyless module is behind the dash directly above the hood release. (I'll check for its existance in my car tonight)

QUESTIONS:
Is it hard to add OE keyless to the S14 'base'?
What are the components needed to accomplish this addition?
What year remotes work?
Was there any change in the keyless system from 95-98?
Were any changes made to the Nissan keyless system beyond 98, or in other models? Could I take the remote from a newer vehicle for use in my 95'?

Thank you,
~Kris