Spacer plate gaskets

[PaulRV6]

If I have a CK spacer plate from his shift kit do I need to buy those specific gaskets from CK, the ones that go on either side? Or can I use standard gaskets?

I'm assuming I need to change them even though they have only been in use for 6 months at the most or can they be reused? Thanks
Stock 2004r.
paul

 

[Steve V]

Standard.