Save 10 bux the good way: From the horses mouth:

"ER Spec Head Swap Package for Nissan SR20DET. Get all of these parts at a package price.

Package will include:

Cometic ~1.01mm Metal Head Gasket
ARP Head Studs
Mr. Gasket Exhaust Manifold Gasket
Valve Cover Gasket"

GO HERE and search for "ER Spec Head Swap Package for Nissan SR20DET"