Hemi Remote Oil Lines

I found the NPT fittings I originally used were borderline not long enough. They threaded so deep that the flats started hitting the block. I almost think they might be an ORB (o-ring boss) fitting since it looks like there's a bit of a counterbore on the top of them. Either that or I just needed longer fittings. I guess they just used a standard hex head plug though, so they probably are NPT and I just needed a longer fitting.