What is the difference in a RX7 Type R, RX7 Type RS, RX7 Type RZ, RX7 Type RZ-A, RX7 Bathurst R, etc.....
Here is my answer as someone that owns and sells RX7's.
The Type R is the most common model - a 2+2 with a poor excuse for rear seats
The Type RS is a special model with different suspension upgraded brakes and again rear seats. The later RS models had 280bhp (99 on)
The Type RZ is similar to the RS but has storage boxes instead of rear seats, its also got some weight reduction and a 4:3 rear diff instead of the standard 4:1 unit. It also has Recaro bucket seats.
The type R2 is as the type R but without the rear seats. (this is the version I own)
The Type RB - royal bathurst is a special model, I am not sure on all of the differences but it definetely has cool red leather seats front and rear.
The Spirit R type A is the ultimate RX7, only made in very limited numbers in the last year of production. They have the 1999 on bigger turbo's pushing 280bhp as standard, 16bit ECU, Recaro bucket seats (the type B and C are different seats and one is an auto box) bigger brakes, uprated suspension, interior changes and a beautiful plaque displaying the number of the car built in the companies Hiroshima factory, not to mention loads of other upgrades.
There are also quite a few other models not even listed!
The car started production in 1991 and in 1996 was given a power hike due to an uprated 16bit ECU. The car also went though several revisions of chassis and exterior/interior mods. In 1999 the car got given bigger turbo's and a bunch more mods including a cool looking front nose.
Anyway thats about all I can be arsed to type right now.
Here is a pic of my FD, its not in standard form any longer!