I picked this up at Columbus a few years ago.
According to documents I've seen it was used on the GT40's with the 427 tunnelports for a while.
The suggestions above regarding Dailey pans and Titan etc, all fail to tell you the cost of those options. Last I heard Dailey was wanting close to $10K just for the pan, and Titan isn't the cheapest option either.
If you want value for your buck look up Armando pans.
I don't understand why my answering his question was such a bug in peoples' collars...