Ferrari's latest special project car is getting closer to completion. This patent image leaked to Car News China appears to show a hardcore GTO version of the F12 Berlinetta but, it's actually the one-off 'SP Arya' supercar commissioned by petrochemical magnate Cheerag Arya.

The SP Arya is based on the discontinued 599, but it will have very little in common with that model. The car will feature numerous aerodynamic enhancements, including deeply-sculpted front intakes, side scallops that echo those on the F12 Berlinetta, and small wings above the rear quarter panels, like ones on the 599 GTO.

The Arya's "face" has also been updated to include the slimmer headlights seen on more recent Ferraris. The shape of the greenhouse is just about the only visible indicator of the car's 599 ancestry.

The 32-year-old Arya is a passionate Ferrari collector, with an F40, Enzo, and 599XX already taking up space in his garage. Apparently not satisfied with those impressive steeds, he approached Ferrari's Special Projects division about converting a 599 into his dream car. After a reported dozen concept sketches, Arya and the Ferrari designers settled on a final form.

The SP Arya will be the sixth car to come out of Ferrari's bespoke division, joining custom creations like: Eric Clapton's SP12 EC, the F430-based SP1, the P540 Superfast Aperta, Superamerica 45, and the 612 GTS Pavesi.

Like those other one-off Ferraris, it's unlikely anyone other than the most dedicated supercar stalkers will see the SP Arya in the wild.