This is for a single head.  Must order two heads at a time.  

Designed for 1992 & later 5.2L (318 c.i.d.) and 1993 & later 5.9L (360 c.i.d.) Chrysler Magnum V8s, the Performer RPM Chrysler Magnum heads give substantial performance improvements for street/strip and off-road performance use. They offer an easy bolt-on upgrade for these modern engines with substantial out-of-the-box performance gains. Stock Magnum intake and exhaust flange and port locations make this an ideal choice for use with stock equipment. These heads feature 176cc intake ports and 75cc exhaust ports with 58cc combustion chambers for a slight increase in compression over the factory heads. 2.02" intake and 1.60" exhaust valves with 11/32" stems offer more flow than stock and they accept adjustable aftermarket rocker arms. These heads have a spring capable of up to .600 lift. Sold individually and requires hardened push rods.

Seat pressure of 150# at 1.800 with an open pressure of .420# at .600 lift.

This is for a single head.  Must order two heads at a time.

Lead time can vary.

http://www.edelbrock.com/automotive_new/mc/cylheads/chrysler/sb_perf_rpm.shtml