Subaru WRX 5 SPEED SWAP TO TY754VBBBA

Hi, Had the 5-speed in my WRX blow on me after buying it the first day of driving.

I have done a bit of research and what I was recommend by Nippon AutoSpares was the  TY754VBBBA which was used in the JDM Legacy RSK (I think), I was just wondering how strong this gearbox is compared to the UK spec 5 speed which are not all great. And how much torque should it be maxed at? 

Thanks