Because the Boss 302R Mustang Jack Roush Jr campaigned in the 2013 Pirelli World Challenge season is up for grabs... 

The car is offered in full race trim, and according to KohR motorsports, it comes with tons of additional content and upgrades beyond what the standard Boss 302R was offered with.

It started life as a Boss 302R body-in-white complete with an all-aluminum dry sump 5.0-liter V8 race engine built by Roush Yates hooked to an old-school six-speed manual transmission.

From there, KohR gave the car a custom built rear end with a Detroit Locker differential, replaced the original Koni coilovers with new dampers from KW Suspension, swapped the Brembo calipers for a set from the Performance Brake Corporation, and built a new custom cooling system.

Other goodies include Forgeline wheels, a Tiger Racing carbon hood, a G-Stream carbon rear wing, a custom made carbon fiber splitter, Lexan windows, and a MoTeC data acquisition system.

The car has pedigree as well, with Roush Jr. piloting it to victory at Lime Rock park, a second place finish at Indianapolis, and pole position at Long Beach.

KohR is only asking $84,900  for the turn-key car and claims it would cost nearly $200,000 to convert a Boss 302S into equivalent spec.

The team is selling the car to support its efforts in the 2017 Continental Tire SportsCar Challenge and promises the purchaser will get their name on the side of the team's current Mustang GT4 for the remainder of the 2017 IMSA season.