manual gear cogs are generally more sturdy and can handle a
reasonable increase in hps. but there is a threshold for
everything. if i m not wrong, even skyline GTR gearboxes can only
"tahan" up to 500 hps. beyond that (and we all know that 26rbdett
is capable of producing 1000 plus hps) the whole gearbox gotta
upgrade.
in any case, when u upgrade the power significantly, u shouldn't
overlook alot of other factors like braking, handling,
traction....... otherwise, the car will crash faster than u can
speed up 