Roadmaster bumper jack

[Andy5875]

13239467_10209893387951070_441503540613428363_n.jpg (308.22 KiB) Viewed 5412 times

I recently purchased a 58 Roadmaster 4 door and discovered it did not have a bumper jack and am looking for one to buy. Are these jacks the same as those used for other 58 GM cars or other years? If so, that would make the search easier.