Early A-body 90 degree oil filter adapter issue
As a guy with the 273 in his Barracuda and Doug’s headers…. Be careful of tightning the bolt. The 4 holes align and I tore the head right off trying to make the torque spec due to the aligned holes are the weak point. I had to buy a newer bolt and thicker gaskets to make it not leak. Also install the inner gasket on the bolt as well. Plenty of how to articles on here if you search “oil filter adapter.”