[WarrenG]

Last time I checked, the CSX 7000 and 8000 cars cost more than the 4000 series. They also came with the old transverse leaf suspension instead of the 427 coil over. Either one or both of those could be a large part of the greater popularity for the 427. IMHO the 289 cars, FIA or slabside, are both better looking cars than the 427.