Hi mate, I have a 2010 Astra CDTI 150 aswell as the cav, and I am running a CRD-T DTUK box on the derv, pumps it to 216bhp and 330lbft and I can tell ya it goes VERY well!!! Keeps up with TT 225's, standard Turbo scooby's etc on rolling start... Thing to watch for though is the 150's have weak gearboxes, rubbing inlet manifolds as the swirl flaps go and alternators aint cheap either... Nice engines when running sweet though.. Heres mine