minimum order item for certain products exempting 2 other products (in bulk)

I have a client that sells books and all their books (except for 2 products, the show special) can be purchased in assorted lots of 12 only.
I have gotten a script that allows me state that 12 lots is required but I need to exclude the 2 specials products from the rule.

Here is the script

I will be most grateful to have this sorted by able developers here.

Thank you in advance.