I am looking into getting a 2014 Volvo 670 with the D13 and Ishift 500 hp eco. Any ways i pull a skateboard and was wondering how the 3.08 ratio will be. On my Ishift right now I have 3.25 ratio and so far i like it. But I need a new truck and 3.25 is a rare case now. How does it pull up hill? how are the rpms? and any other information would be apprecaiated . Thank you