I haven't done a MII, I stubbed my 53 with a Nova subframe. I did add about 1 inch to the wheelbase. Now my truck is so low in front that the 225/70R15 tires rubbed the fender braces, when I made sharp turns. I ended up going with 215/70R15, and 4 1/4" back space on the wheels. So I would advise you to use the original front centerline, might save you some wheel/tire clearance problems down the road. A Taskforce may have more space than the AD?
