I know I have had good luck using some of the Mattel WWE Diva heads for female figures. So far I have used the Bella Twins and Layla and they have worked just fine. You almost have to do it on a case by case basis though, the recent AJ Lee figure is much smaller and the head will not work.
I think that the majority of the male heads would be a touch too small, but I have never tried them.
I have heard that the older WWE figures from Jakks Pacific work well, but have not personally tried them. However I do think the current TNA Wrestling figures could work.