Looking to install a Gracoil adjustable LOP butt plate on a Citori for my wife. Any special tools needed for the install???? ie.jigs or bits? I will have to cut the stock down some first. Any info/advise appreciated.

They do make a jig for installing the unit you are talking about.

http://www.brownells.com/.aspx/pid=2526 ... NG_FIXTURE

If you are handy you can make the plate out of wood as a single use type of thing. You just have to be more careful when drilling.

I was lucky and saw a home made one for sale in the classified section.