Hot Rods 47 or 48 Cadillac Flathead

Hi Guys,
I'm looking for a complete 47 or 48 Caddy flathead....if it's a runner, even better.....any clues where I can start looking ? Thanks

 

Well, if nobody knows where one might be.....can anybody tell me if the p***enger car flatheads were the same as the military engines....I have found a military flathead with a hydramatic attached but I don't know if they differed internally. Thanks