Recipe users for body parts

[Shinzy]

I haven't really played around with any surgeries, can I use the recipe users for added body parts?
and if yes where should I put them in?
I really don't want to fiddle with the race defs (for compatibility reasons )

[Illusion Distort]

Humanoids have the addbodypart comp, if you look at these files you'll bee on your way:

Bodies.xml. -------------------Optional ---BodyDefs
BodyParts.xml ----------------Optional ---BodyPartDefs
Recipe_Surgery.xml ----------Needed ---RecipeDefs
Hediffs_AddedParts.xml ------Needed ---HeddifDefs

Using these you can make your army of surgically modified minions.