currently been a 3.9 disco owner and a 2.5 rr owner(2 months).i bought the rr cheap with the idea of doing it up-selling it but bearing in mind i drive a v8 3.9 disco,i,ve decided to keep the 2.5 sluggish rr and sell the disco.so there you go the 2.5 can,t be that bad,yes its a little slow but...