Yeah, I guess, call Beth at 800-543-7156 and ask her, she'll let you know what can be done.
Just so you are aware, the "B" will not be as effective without using the "A" first.
The "A" expands and enters the paint system and goes after any acid residues, which makes it open to the "B" product.
The "C", while it is used as a regular car wash shampoo, is the final step to neutrilize the alkaline of the A and the acidic of the B.
And, since this is a very sofisticated system, even the last step of the "C" is important as well.
Has to do with recreating a "chemical balance" in the paint system, it's resins and such.
These are the reasons that the car manufactuers require it's use as a system and even have the company private label for them under their parts brand names, like MotorCraft.