Talk to Al at American Sport Bike or Dan at NHRS
www.americansportbike.com or http://www.nrhsperformance.com/
i ordered all my gaskets from Al. While you have it all apart, check your oil pump drive gear and if its not the new bronze one, replace it!!
Also, if you have the funds, i would recommend installing XB rocker boxes as well.
You can do everything in the frame without removing the engine-