Absolutely use the OEM gaskets! No modifications needed. Jeff gives the OEM gasket part numbers on his website:I have an 06 Armada in California. Installing JBA shorties. I notice you recommend OEM gaskets for your kits. Should I use OEM gaskets with the shorties? Do I need to make any modifications to the headers if I use OEM gaskets. Thanks for the help.
You will need to purchase two Nissan manifold gaskets part #14036-7S001 and four b-pipe gaskets #20692-65J00
There will be some gaskets that come along in the JBA kit... those go directly into the trash can.
You are going to have to do the UpRev tune as well, but that cost is part of the Cajun package from Jeff.