Depends on the box code. Strangely R32 boxes are not as strong as from the 4 motion. DRP code is a stronger box. But standard boxes will take loads of torque, as has been proved many times by the R32 turbos out there, if turboing the 4mo then it's probably worth investing in longer gears, it's a job on my list IF I keep my car. Basically a diesel 6 speed internals inside the 4 mo box