There is or was yesterday a 1966 "Holmon Moody built" (new)
427 side oiler listed in the "private party parts for sale section" located on this site! For $15K!! It might be worth looking at! I love mine & it is a true beast
Remember cash talks! & verification of products will keep your plans & dreams on track. Good luck! By the way, if you decide to have some one build a engine for you. You won't go wrong with Blykin's