Browsing through the site and seen some really nice RST's (obviously ), but also noticed a few that have full leather interior, which looks like it came out of the 4x4 Saph Cos. Is it?

I know the half leather trim out of a cabby won't fit correctly in the back of an ERST because of the speaker pods in a cabby or something (?) but does the Saph Cos seats fit in the ERST or have i got it totally wrong?