I have a 92 intercooled 4X4 5speed 250 with 4:10's and i pull a 33 foot 5th wheel (weighs about 11000 loaded) and i am going to time the injector pump soon (waiting for tool to come in) and what i want to know is what turobo housing you would recomend (ie 12cm) to get quick spool up and good top end. Thanks