whats the limit of the un1 gearbox?

[stuart]

i am running a car with a renault 21 turbo un1 gearbox in it (std)
and was wondering what the limit is

i know its roughly 350lbs/ft
is any1 on here running more that this on a std box?

also my car only weighs 1000kg so will it take a bit more power?

and if any1 has an uprated one for sale pm me

cheers