Lexus is reportedly working on a sporty coupe derived from the GS sedan.

Lexus, which is in the process of reworking its lineup with a greater emphasis on driver involvement and emotional appeal, is currently without a sporty coupe model positioned below the limited-production, $375,000 LFA supercar.

However, Inside Line reports that the automaker is working on a performance-focused two-door that will debut in 2013 as a 2014 model. The new model will reportedly be underpinned by the GS sedan's rear-wheel-drive architecture, though whether it will wear the GS badge or another appellation is unknown.

A big question is what might end up under the hood - though the 3.5-liter V6 from the GS 350 or the GS 450h's hybrid powertain could work for an entry-level model, a more powerful mill would likely be needed as an option.

While the report failed to cite any evidence, Lexus execs have been vocal in the past about the need for a coupe in the $60,000-$70,000 price bracket to complete the automaker's model range.

"I'd like to do a coupe," said Lexus product planning manager Ben Mitchell last year. "We're really trying to increase the emotional qualities of our brand. We want to emphasize exterior styling and dynamics."