I use Tune B, with Initial-D muffler from A-tune as the only
custom part.
It's a very interesting car to use. Abit problematic in battles,
because its startup is like an FD, but its not as agile as an FD
(it's still more agile than a BNR34 and most of the 4WDs though).
However it is more stable, which makes it fun for courses like
Tsuchisaka. Rain is this car's ally on most courses vs alot of
other cars, esp when u use B-tune.