I was searching the webs and found this, really interesting. You ever had this ped.ifp you really
liked but there's one or two anims that ruin everything? Yep, this solves your problem.
The tool that this comes with, is really cool also, besides letting you edit the ped.ifp you want,
you can view skins you don't have screenshots from without installing and weapons.
http://www.mt-gaming.com/index.php?threads/tutorial-how-to-customise-your-ped-ifp.42244/
I used original ped.ifp below, only changed the crouching stance.
Tutorial is simple and it works.