I was just referring to sedan lineup. skyline sedan is currently offered in 3 line up and called 250GT, 250GT 4WD and 350GT. Coupe version is known as 370GT.
At the moment there is no 370 version for sedan but initifity has launched 370 version of sedan.
Please refer to below for your reference:
V36 has currently offered in 4 distinctive models:
* 250GT - 2.5L VQ25HR V6, 225 PS (222 hp/165 kW), 268 N·m (198 lb·ft)
* 250GT FOUR - 2.5L VQ25HR V6, 225 PS (222 hp/165 kW), 268 N·m (198 lb·ft) 4WD
* 350GT - 3.5L VQ35HR V6, 315 PS (311 hp/232 kW), 365 N·m (269 lb·ft)
* 370GT - 3.7L VQ37VHR V6, 333 PS (328 hp/245 kW), 363 N·m (268 lb·ft)
250GT sedan
Transmission is 5-speed automatic on all model ranges. 4 wheel drive is standard on 250GT FOUR models.
250GT Type S was introduced in 2008 model year.
350GT sedan
Transmission is 5-speed automatic on all model ranges.
4-wheel active steering is available in Type S and Type SP as option.
370GT coupe
Introduced in 2008 model year, it is a Japanese version of Infiniti G37 coupe.
Transmission is 5-speed automatic on all model ranges, with 6-speed manual on Type S and Type SP.
18-inch wheels are used on base and 370GT Type P, while Type S and Type SP includes 19-inch wheels.
50th Limited
It is an option for 250GT Type P, 350GT Type P, 350GT Type SP, 250GT FOUR Type P, commemorating 50th year of Nissan Skyline. The interior is marked with anniversary red leather seats, and serial numbered front glass. This package went on sale on 2008-03-31.