Upgraded alternator too close to oil filter housing?

[MMercury]

A friend was was poking her nose around a body shop where she recognized a tarp covered silhouette of an e9. Upon closer inspection (under the hood) she pointed out the tight space between the aft portion of the alternator body and the (top bolt style) oil filter housing. The nervous shop steward understandably did not want anyone to linger too closely to the cars, so my glimpse was fleeting.

I have not had an opportunity to examine my own alternator-oil filter housing "space" but I presume that the alternator I viewed is an upgraded larger deeper body alternator. I haven't a clue what model alternator I viewed or what model car it is designed to fit other than it appeared to be a Bosch made unit. This reminded me that I have a few spare alternators that I have avoided using because they appeared to be too big or long - increasing the risk of grounding the positive lead against the filter housing and making a slightly messy filter change far more daunting than it already is.

I noticed the pulleys and belts of the tarp covered car lined up indicating that the system probably worked fine. But I wonder if this is a common issue and whether my concerns are easily dismissed. Can anyone shed more light on the subject of using an extra deep / long alternator that comes very close to the filter housing?

Thanks in advance.