if you're just gonna stop with the tranny, it seems like a waste of money, but if you're planning on doing more, i don't think it makes any sense to stick with the SS... To buy a used 5spd, that's one thing. If it's cheaper to swap one in, that's another thing. To spend money trying to make a SS less slow is like trying to bail water with a spoon, when you could easily get yourself a bucket or a pump.

if i ever end up going up against a JSRC SS @ buttonwillow or at autocross, i'll let you know then how much faster it is to have a 5spd...

ah whatever. it's your money, your car.