I had recently inquired about some basic tech questions about the C4 Corvettes.
JONSTR a member at Corvette Action Center who manages Callaway Owners Group managed to answer some of my questions regarding the Callaway Turbo Corvettes.
You can view the thread on this link:
http://www.corvetteactioncenter.com/forums/callaway-corvette-forum/111635-twin-turbo-c4-callaway-corvette-question.html