As someone already said, Vintage did it, and it was to a Backdraft.
http://www.vintage-motorsports.com/g.../BDR193?page=1
There used to be a complete picture set on their site that showed you everything you needed to do to make this work on a Backdraft, but I can't find it now.
Since Vintage is a Backdraft dealer, and have already done this, you may as well give them a call.
You can search this site and find an amazing set of referances for them.