Were split bench seats available on a 73 GS Stage 1 Riviera?

Were split bench seats available on a 73 GS Stage 1 Riviera or were only bucket seats installed?

 

I think the Standard seat was called a 60- 40 seat, the passenger side and the center armrest
move independent of the drivers seat.
Bill

 

I thought maybe the GS and Stage 1 may have came with bucket seats as part of the GS package?

 

I have seen only one (GS + Stage I) without the bucket seats and console shifter, this was at a car show in the UK somewhere in 1996 or 1997, that car was imported from Florida.
1973 Riviera GS without the bucket seats and console shifter are more common.

The other day I saw this one for sale in Salt Lake City, Utah: Click here :Comp:

 

Here is another one, for sale in Vancouver, Washington state: Click here :Comp:

VIN says it's a Stage I car: 4 Y 87 W 3 H 487005
Engine code should be XA

 

I do not believe that the GS package ever mandated bucket seats or even the Custom-level interior trim.

 

For Rivieras that was named the DeLuxe interior :TU:
And the model year 1973 GS package and/or Stage I package had nothing to do with the interior.