the mounts and transmission arms are different between vacuum and electric on the 58/9, you might find the 55-7 electric motor will fit, but otherwise the vendors sell 2 different replacement electrics, one for 58/9 that had vacuum wipers, one for those that had factory electric - the angled bracket is part of the vacuum motor .... 58/9 electric setup .... the 5-7 version uses the same arms as the vacuum

Bill

Moved over to the Passing Lane

"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