I was thinking about this and it's not so simple, many cars now seem to be getting more heavy, complex, powerful from factory and consequently very expensive and hard to modify.
Skylines are cars that kind of offer democratic hi-performance to the DIY modder and are not that expensive.
I'd put the R35 into a totally different bracket to be honest.
Where have the manual sports cars gone? Especially RWD like the GTST?