90 Degree oil filter adapter

Interesting. I hadn't seen those before. That sure looks like the oil pressure sender in the pic. You could also use that port for a temp sensor if your pressure sender is in the block already.

I am guessing here because I have not built a 3G A body, but from what I have seen it looks like it would allow the use of the longer oil filter like you said. When using the factory 45 degree adapter, guys usually need to trim the drip lip to clear the k frame and use the shorter oil filter to have enough room to remove it.