The McLaren Senna is McLaren's most extreme and track-focused road car, but it's about to get even more hardcore. A leaked photo posted on Pistonheads and leaked renders revealed by The Supercar Blog show McLaren Special Operation's new unannounced project: a track-focused McLaren Senna LM.

Sources claim it's based on the Senna GTR, but unlike the GTR the Senna LM will be street legal, just like the McLaren P1 LM and McLaren F1 LM before it. Compared to the track-only GTR, the McLaren LM looks less extreme since it lacks its track-only sibling's front canards, aggressive rear diffuser, and rear spoiler.

Instead, the Senna LM has louvers on the front fenders, a roof scoop, LM badging on the side, and center-locking wheels akin to the F1 LM to distinguish it from the regular Senna. It's also finished in special orange paint as a nod to the F1 LM, which was built as a tribute to the five McLaren F1 GTRs that competed and finished the 1995 24 Hours of Le Mans.

Inside, renderings show the Senna LM with carbon racing seats with orange upholstery and an LM logo on the headrest. As for the leaked photo, the Senna LM was spotted outside of MSO's facility in the UK parked next to another Senna under a sheet and a McLaren F1. This suggests the McLaren Senna LM will be an official MSO model, unlike the five McLaren P1 LMs that were built by Lanzante.

All the details appear to match the renderings but take a close look and you'll notice the front fender is missing, which suggests the car is either still in development or was involved in an accident.

Sources claim the Senna LM will boast "Senna GTR-like performance in a road-legal package," so the street-legal version will likely use the same 4.0-liter, twin-turbocharged V8 as the GTR that produces 814 horsepower and 590 lb-ft of torque. If so, the McLaren Senna LM will have 25 more horsepower than the standard car. The McLaren Senna LM will allegedly cost £1.3 million ($1.6 million) before taxes, with production limited to 20 units.