Help please - new? style 90 degree oil filter adapter

I' been digging through my parts to find a 90 degree oil filter adapter. I found the type that I'm used to - cast iron, but also ran across two like this:
DSC03074.JPG

They are aluminum and have a shorter bolt and those two 'prongs' sticking out of the side. What are these for (what did they come on)? Do they interchange with the old style? Any draw backs to using them? What are the prongs for and do they interfere with use on LA motors?