I have to disagree on the Recaro thing. When someone looks for 13-14 GT500, don't they desire the Recaros? And the same with GT350's? Those seats should be standard and the other seats offered at no cost.
Recaros are standard in the 2020 GT350's, you have to pay extra for the standard seats in the GT350 (900A).
From the 2020 Order Guide
2020 GT350
Leather-trimmed with Miko® Suede Sport Seats with Seat Back Map Pockets (replaces standard RECARO® Cloth/Miko® Suede Sport Seats)
– 4-way Adjustable Head Restraints
– 6-way Power Driver Seat with Power Lumbar
– 6-way Power Passenger Seat
– Climate Controlled Front-Seats (Heated/Cooled)
– Memory Recline