The previous owner of my 74 2WD long bed installed big block front springs and 3/4 ton leaf springs in the rear. Needless to say, it sits higher than stock and I would like install a 2/4 lowering kit in the future. Will I have any fitment issues if I install a set of 255/70/R/15. I know they'll fit now but I'm not sure if they'll work after I drop it. Thanks.