Looking through an old 1987 Autocar found this:
TWR
Mazda RX-7 (Old Model).Front
Spoiler,£218; sill set, £265; rear
Spoiler, £208; rear apron, £234;
two-branch manifold and exhaust,
£265 (all prices exclude fitting and
painting). Leather steering wheel
and alloy road wheels available for all
Mazdas. Contact:The Motorsport
Centre Limited ..Blah . blah
Dorchester-on -Thames
Obviously long since gone but interesting:)
Theres a really interesting thread along these sort on lines on Ausrotary at the moment ... I\'ll see if I can find it and post it up