He's talking about the Skyline GT-R's. All his info is correct. R-34 is the latest Skyline GT-R model. I believe it has a 2.5 liter engine (RB25DETT). They look totaly different. One (R-34) is a AWD TT Supercar, and ours (G/V35) are just regular cars.
this is what the R-34 Skyline GT-R looks like (same car in 2f2f)
all this talk of the "new" GT-R coming to the US - That car is what will be the next generation of this R-34.
2003.5 6MT Black/Graphite Coupe Premium Aero