Naaa - they're cheapo valve covers. Wasn't sure I would like them so went with the cheap ones for starters. They both only have a grommet hole - no locking tabs underneath -
The Mr Gasket 2056 breather info is listed as....."It has metal baffle/foam element"
If it fits without interference it's probably my best bet because of it's smaller size - it's the smallest breather I can find - there are other smaller plain caps that are not breathers.