I put my brand new engine in last year and same thing. I dont blame the engine building at all, these engines just do that with boost snd no vacuum pump. For me it was no big deal a quarter size oil drop every week or so. And it was coming from the exact same area (I too have the quicktime bellhousing and it dripped right from where yours is. Pretty sure mine was the rear main when I took it apart. My builder is currently refreshing engine anyway and is fixing that issue, but I have no doubt with the boost I run it will probably inevitably happen again. I need to get a vac pump at some point, I just have no room to put one is the problem.