Stan, glad to see u back O/L! I have seen a few 87's w/ the 17" Dy's and I imagine that while the cars were at Old Lyme awaiting the package the wheel center caps became avail along w/ the wheel itself. I will say this about the deal... It may have been "offered" to the 87 owners but not all were takers...
look at the 87 TT on E bay now (4/28/02) it has the 17" Dymags but eludes that they were added...Check the name - these I think are the Dymags from e bay about a month ago that "supposedly" did not sell...
FWIW, about the 88+center caps... All 88 Corvette pre production photo's I have seen, show the 17" wheels w/ out center caps (but w/ the provisions for them) These photo's are taken back in 87 or even very late 86 . I wold imagine the Callaway folks knowing this wheel / center cap was coming and them working so close w/ GM that they adapted it to the unique Dymag 17" wheel.
On another note... Looking at the e bay pic for the Burg/gray 87 TT currently for sale, I noticed the dash plaque states 87 184 of 184 yet there are cars 185, 186, 187. 188 (with plaques) out there including two of those being the 87 automatic cars and I understand one of them to have the "flat hood" of the 88 cars... (and two of those I believe to have 17" Dy's as well)
enjoy!
This will all make for good conversation at the Callaway Reunion!
See ya!!!!!
*89x2*