and no, trucks never had crossmembers with any standard trans - not sure why it's 10" lomger, the OD from 55-68 is a direct boltin replacement for the standard 3spd 55-68, if it were longer it'd take a different driveshaft
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics