If you go into CAS and click on 'body' on top (now only possible in cas.fulleditmode), the pear template is the second from the left on the top of the list. That's the template, but you can pull at your Sim's flab, so that he/she doesn't look downright pear shaped. Don, for instance, uses a template further down on the list. Caleb too. So why does a cross between other templates (in my case always) result in a Sim that uses the pear?