Originally Posted by MrFatbooty
Honestly the theory behind this is a bit suspect. There are plenty of turbocharged cars out there with close-ratio gearboxes. You will still be quicker with a close-ratio gearbox with a short final drive. The main benefit of an LS box is that since a turbocharged VTEC motor generally widens its powerband compared to a normally aspirated one, a taller overall gearbox can be used to make cruising more relaxed.
If you already have a GSR transmission, stick with the GSR transmission.
honda trannies are designed with a close ratio gearbox to give it peppy performance by compensating for a lack of torque.
if you significantly increase your power, you end up rowing the gears more than necessary to take full advantage of a power increase. the less you have to shift, the faster you are.
of course too tall is bad, but matching the gears properly to your engine's output is key to increasing efficiency. no use having short ratio gears if you're burning tyres and clutch in first, only to have to shift to 2nd mid burnout... or to feather the gas in 1st and not being able to really open it up for a better launch