Mazdabation

I'm begining to wonder if there is much of a difference between the RZ and Spirt R.

Besides the fact the Spirt R has special badging, paint colour, and production numbers.

I thought only the Spirt R had the special red Recaro seats and red stiching on the shift boot, ****, and steering wheel, but it seems so does the RZ from those pics(look at the interior pic real close, you will see red stiching on the shift boot)

It seems they have all the same upgrades, rims , interior, suspention etc.

Any one have some facts on this and the differences??