Don't forget we got a bigger 5" swim grub for sale now. It's called the "Calikiller" since it designed with the Calico guys in mind.. We got some good reports of it being using for largemouth, too, though.
It's pictured next to a 3" swim grub and it also has a 3/4 oz Kalin's jighead with a 5/0 hook attached to it. That's the only bigger jig head I had in my tackle box but I think it would be fine with any jig head that has a hook in the 4/0 to 7/0 range. An appropriately sized Big Hammer Head or Warbaits head would probably be a better match.
The price is a 4 pack for $5 and you can get them in any color the 3" swim grub is currently offered in.