One thing for sure, I'd stay away from 2" cut broadhead period!! I've shot a few hogs with a rifle and they are VERY resilient animals.

It sounds like you have plenty of KE (77 ft-lbs) to push a mechanical, but from what 5shot has done, I wouldn't use more than a 1 1/4" or so mechanical on anything but turkeys.

Also, in my experience a pass through on a pig would be pretty important. Their skin has a tendancy to close up the hole, therefore not leaving much of a blood trail. Two holes will bleed better than one!

Good luck, let us see some pix when you get one!