I've never ordered a kit. I have read on some sites that state that they can substitute. I don't like that just because if I have ordered something then that is what I am wanting. Not a substitution. I would prefer for them to contact me to see if a substitution is ok before they send me something off the wall. I know that they are a business but just like with you getting these 2 kits....you probably won't order from them again, I wouldn't either.