CrazyRonny, Traveler2 will have to weigh in on the 04 in BoxStock or not with a swapped ReadySet board, but on the swap to a 03 board, I have seen a 04 board in a 03 chassis with 04 top plate online. So I would ASSuME going to an 03 board in an 04 chassis should just require the board and an 03 top plate. But again I saw it online not in person, so take the info with a grain of salt!