i saw this thread just after i sold my red and silver 58cm (st) centurion turbo the other day and got kinda bummed. i got good money for it, but i may have gotten more. it was hard to find much , but i researched them a bit and found that the red ones are a little rare. i believe its a 1982 frame and fork. i didnt have any original components on it, but it had suntour drops. im tracking down the guy i sold it to so he can at least know its true value. i'll get the serial number from him and post back.
(EDIT) i just noticed ACME-SUPPLY (about three posts up) has the exact frame im talking about. i can still give you a serial number if needed.