The sticker on one of the engines (kinda hard to make out) says Beauchamp Motorsports who seem to be not totally unknown
since they are mentioned several times in "How to build big inch Mopar Small Blocks).
There's also some stuff about them on the internet
--> "April 13, 2009. Beauchamp Motorsports is pleased to announce that they will be returning to the race track in 2009 with the familiar Team Mopar colours. A new multi year sponsorship agreement has been signed and will continue the long time association with Mopar along with associate sponsors Mobil 1 and Exide on the #60 Dodge Avenger. " [excerpt]