Sparco REV Fixed Back Racing Seat Option:Black(008143FNR) and 13015) and you have

and 13015) and you have a regulator with vastly different characteristics

Perfect for late model 2011 and up 6

Part #:112-700-11

The adapter is made from CNC billet aluminum construction with Sinister Diesel's signature blue anodized finish

Sparco REV Fixed Back Racing Seat Option:Black(008143FNR) and 13015) and you haveThe REV II is Sparcos is an evolution of the REV seat and is designed for the larger driver. The REV is ideal for a taller and wider driver. The seat is considered an L XL size in the Sparco range which is a driver that is over 200lbs with a 36 38 waist. The REV II has shoulder harness guides that have been height optimized for taller drivers up to 64 depending on torso length. The REV II also has smaller outer dimensions when compared to other