Ok, this might be a tricky question<br/><br/>A drider and/or choldrith have racial aberrants HD<br/><br/>Certain  prestige classes, like divine disciple and arachne have an end ability which changes the character into an outsider.<br/><br/>Now, would this change all the aberrant HD into outsider HD and thus, grand outsider BAB and skills?<br/><br/>:D