lol........working in the background atm we seem to be getting all different figures.....
I personally recon the standard GB is good for about 190 - 210AWKW's......240 AWKW's with a shift kit....anything after that and you will eventually burn out the clutch's.
Then we have the scenario of what the rebuilders are saying. 1 is saying safe for 1000hp + mega NM's for approx $2,500 with 2 year's warranty. Scott's was about $3,000 but he had the stall converter done as well and I think he got warranty but his GB guy is saying about 260AWKW's atm. Then Dominello's in Sydney is saying about 340-350AWKW's and 2 year's warranty for about $3,500 with the a new converta!
1 thing I can tell yah.....is the Standard GB don't like 270AWKW's when shifting!