You may have to watch which long action you have. Though the screw spacing is the same I think you'll still run into staggerfeed on older stuff and centerfeed on others. There will be differences in the bottom of the action between the two. Just check it out real well before you jump on it. Haven't messed with any of the hinged floor plate models but usually if you pull the action from the stock a staggerfeed will have the mag box attached to the action. A centerfeed will pull free with no mag components attached.