Oil leak

[Kaptain Kadian]

I am having an oil leak that I am not positive where it is coming from. I know that it is dripping from the flywheel cover after I drive for a while. It is not a large amount of oil, but is enough to be annoying. I did an engine swap in 2008 and put in a jasper motors 383 stroker. I haven't driven it a lot since I did the swap, but have been driving it more lately. I got under the truck to see if I could figure out where it was coming from and found that a lot of the bolts on the tranny pan and oil pan where loose. I tightened them back up, and drove it again today to have it leak again. Any suggestions on what to do would be greatly appreciated.