The slow acceleration could probably be due to the time you
shift gears.
Probably happens in the 4th gear when you shift too early (ie: too
low a rpm at 3rd then shift to 4th gear).
The GC8 is a good car and depending on how many bunta's you have
defeated, it may get hard.
i have 26 stars (bunta mode) on akagi and till date, have not
gotten further than that with my dc2.
i am sure the game
is designed such that all cars can defeat bunta 30 times for all
tracks. some cars maybe harder, some easier.
so perhaps for your GC8, learn to master the timing of your gear
shifting and also, try not to bump the walls or guard rails and you
should be ok.
