i bought a 700 223ai from a widow of a bench shooter.the rifle wasnt complete.he has a single shot carrier installed by epoxy in the laminate stock that came with it.it was missing the trigger guard and all acc. i purchased a 700 trigger guard off a guy and a 223 carrier off another guy. my question is does the 223 use the same box as the 308? are do you have too add a spacer too the box? i want too put this back too a drop floorplate 700. the box i got with the trigger assy is off a 308, what do i need too do? thanks