I do see a factory oil adapter from time to time on eBay - but the one pictured, in post # 3 should work just fine.
If your "T" is cracked, take care on removing it. If it breaks off - it is a "not so fun" job to extract the broken part. It is doable, but not fun.
The factory "T" is a sturdy part and the only time I see any problems is when it is left in the engine when engine is removed (for it hits the firewall) or during engine transport.
If you are working on a broken "T", you have to be mindful of not getting metal shavings inside of the engine - which is something most "easy outs" are known to do.
These two designs I find produce the fewest amount of metal shavings (if any) - but both methods need to be hammered into the broken off part:
Then the harder part is to remove the extracted broken piece from you "easy out". . .
BudW