You would buy the LWO 283 as part of a donor watch ($500 and up). Tag Heuer and Concord amongst others made watches with that movement. You will need a gen dial for sure. And you will also need a modder to work on the case (bezel, mid case and case-back. It will also require a custom movement ring. That work is typically $800+ in and of itself. So just to get the project off the ground you will need $500 (rep) + $800 (work) + donor watch ($500+) + dial ($1200+).