Lexus may be cooking up a hotter version of its flagship LX SUV, since last week it filed a in the US for the “LX 600” name.

The trademark doesn’t reveal any details, but the name hints at a bigger engine for the LX. The current LX 570 is powered by a 5.7L V8, so the LX 600 could get a larger 6.0L engine, but then again that may not happen. Instead the LX 600 could get a twin-turbocharged V8 that Lexus is reportedly working on.

The lack of an “h” in the name rules out a hybrid version. Although the LX 600 name has been trademarked, it’s not known when it will be used. The LX and its cousin the Toyota Land Cruiser are two of the oldest vehicles in Toyota’s lineup, so the LX 600 name might be reserved for an all-new version of the brand’s flagship SUV.