Hey i own a turbo dc4, and i still run the original gearbox, I was close to buying a type r box but discovered its going to cost me to much to do and i don't have the money at this point in time.

Is there a way you can change gear ratios with the dc4 gearbox. i've found some typer helical lsd's for a very good price, can you buy the gears for them. i don't know much about diffs and gearboxes in any car.