I think my duster sounds like what you are looking for first time out went 10.35 with a pump gas 512 Im sure there is more in it as the trans dident make it through weekend Dana 60 with 4.88 gears and tubbed out for 14x32 currently useing my 33 10.50 but it is a 70 and I dont know if I could bring myself to part with it so soon after finishing it and befor I get a 9.90 out of it.