the xx20, xx30, etc = different WB, that specific frame style number wasn't included on any of the emblems, it would be the generic "1400" of the series
"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