The Body bias encompasses a great many biological functions, from a bumblebee's bizarre method of flight (which consists entirely of dynamic stall - go look it up, it's really fascinating) to a scorpion's venom, and how sharks swim.
So what I'm wondering is, is there a way to develop a Bod-biased ability for which your race does not normally have the parts? Can you force yourself to grow wings, a little at a time? Or develop a poisonous bite akin to a cobra if you don't normally produce venom? Or are these things completely off-limits without some major surgical or magical modifications?
And if you DO get those modifications - if, for instance, I use magic to graft the venom-sac of, say, a Lernaean hydra onto myself - do you start out with something like 1@1 Produce Venom Bod whatever-the-bias-is-for-that? Or do you get whatever the Lernaean hydra's SAL at producing venom is, seeing as it's almost strictly a function of developing the organ you've just inherited?