The adapter is similar to the one I installed on my 4.0L Sport which is shown below in mock up form. I applied gasket sealant to the ring seal and so far it has never leaked. The main criteria for the 4.6L adapter was the 0.5 inch NPT vertical ports and the correct filter threads. I plan to mount the check valve at the adapter with a short nipple. I wanted to change the pre-luber output port fitting from 1/4 inch NPT to 3/8 inch NPT to match the inlet port and for better flow. But when I removed the out fitting I found that a 3/8 inch fitting would not retain the internal check valve and spring. So I'll have to stay with the 1/4 inch fitting that had no O ring seal which I'll have to find. The photo below shows the inlet and outlet ports with AN adapters and some other fittings for comparison. In my opinion 8AN for the inlet and 6AN for the outlet is adequate since the time to pressurize the engine is not critical. The remote oil filter adapter ports are 1/2 in. NPT as will be the remote filter mount. I want to avoid restricting the primary oil flow between the block and the remote oil filter so I plan to use 10AN (comparable to 1/2 in. NPT) fittings and hose for those paths. I'll have to find a fitting to mate the 6AN pre-luber output hose with the 10AN hose.