I happened to pick up a copy of Hemming's (Dec. ???) in the bookstore and saw it listed in the parts section. No VIN given.
The ad states that it is a bare SS block with a BR TH400. I haven't heard of a 400 with the BR identification. There may be one, but this ad states that it is a Stage 1 engine and trans. All the Stage 1 TH400s I have ever seen are BB ID's. Makes me wonder. Wonder what gives?