Here's my wishlist for GT4, all cars I wanna get sideways.
Nissan/Datsun:
510
240Z
260Z
S13
S14
S15
Sileighty
180sx
R32 GTS-t
R33 GTS-t
R34 GTS-t
G35 Skyline
And every other gen skyline (too many for me to remember)
Mitsubishi:
Evo VII
Evo VIII
Evo VIII Rally Car
Subaru:
2.5RS
WRX
WRX STi
WRX STi Rally
Tommy Kaira:
Tuned WRX
Tuned Skyline
Toyota:
Supra
Levin
Trueno
Soarer
Chaser
MR2
Mazda:
FC3S
FD3S (all versions)
RX8
Too many to list... Basically all of the big Japanese luxury sedans, and some others.