Jeff, you need to give them a call for the details. Currently, their website is under construction and a lot of the specifics are not shown. Especially the GTO packages. They have exactly the same offerings that you have detailed in your last post and more. One of the key decision factors for me was that Callaway was the OEM provider for Holden of Australia for the H.O. optioned Monauros. All the motors were built here in the U.S.A. and shipped to Holden for installation. Additionally, though not necessarily on topic, Callaway did all of the turbo systems for the Mazdaspeed lineup of Proteges, also in an OEM partnership. So, as you can see, Callaway has extensive experience in the OEM marketplace. And, let's not forget the Callaway Corvette era in which the turbo option was GM RPO BK2. Here is a link for the Mazdaspeed summary.
Car & Driver Mazda/Callaway Article
Rather than casting doubt on the situation at hand, please do as I originally asked in post #5 and call Callaway for further details. Trust me, Callaway doesn't strive for the publicity like Lingenfelter does and their products still sell themselves. There isn't much, if anything, written in "bold" print about this topic. However, Callaway has much stronger industry ties as is evident by their past and current OEM based projects. Check it out. You'll be surprised that they have a tremendous market share unbeknownst to your staff. I close with this post. Wanna race