the solid rear axle swap has crossed my mind a couple of times now . just in appearance a solid 8.8 or 9 inch and ladder bars and coil overs appear to be a lot lighter , and to my feeble old mind would be much easier to setup and do what i'm thinking . ................... there isn't too many places to cut high speed corners around here , and or high speed driving , but a couple of drag strips within an hour or two ....................... got an 8.8 and 9 inches here . the 8.8 is from a police package 87 crown vic and was at one time going in my 53 but .... it looks to be the right width without any mods . still haven't really measured it , but if memory recalls it's 55 inches from backing plate to backing plate .