transmission output seal replacement - F100 1955

[tquigley]

I purchased a 1955 F100 3 speed transmission from a guy who tried to remove the rear output seal. Using the seal removal pry bar previous owner (PR) managed to mangle-out the elements of the seal - the rubber, a spring looking piece. The perimeter of the seal remains in place and will be hard to pry out.

I purchased a replacement seal; however, it pales in comparison to the original. It is a much simpler rubber seal. Is this an acceptable replacement for the original more robust seal? What am I missing - any secrets to replacing this output seal? Suggestions? Where might I find a replacement? Ford part number is 7052.

Seeking wisdom TQ