The INFINITI QX80 R-Spec build features a GT-R sourced 3.8-liter twin-turbo V6 that has received extensive modifications to be capable of 1,000 horsepower, with custom turbochargers, intercoolers, exhaust manifolds and an upgraded fuel system. Selecting a GT-R engine as a donor for this build was a direct nod to the lineage of the standard twin-turbo V6 in QX80, which is directly related to and incorporates numerous engineering innovations from GT-R.