Probably in the thread somewhere, but what's the comfortable limit of the standard spec or with minimal mods before expensive stuff is required?
Is that the limit of the gearbox or something else?
Thats the "sensible" limit before it starts to cost a lot more money for little return - So adding 150hp to the 580hp stock power for 730hp is around £2k - The next 70hp is £2k and the next 100hp is £20k etc so the vast majority of people only go for "Stage 2" as it's called which is 730hp from a remap, air filter and secondary Cat removal.
As for limits - the turbos are 800hp-ish, the GB is 830hp-ish and the block is 1200hp-ish.