Buckeye, I replaced the rear in my '53 3/4 with one from a '68 F#*d, it's a Dana 60, 8-lug, 3.70 gears..had to move spring and shock mounts,and modify driveshaft..but it's the narrowest 8-lug I could find..most of the new stuff is much wider..stock '53,'54 gears will be 4.56's..can be converted to 4.10 at best I believe..my $.02