Correct Harmonic Balancer for RWD L36? (Page 1/1) stark86 JUN 04, 06:05 PM I'm helping my buddy with his '02 Firebird L36 V6 and we're having trouble finding a harmonic balancer. A parts catalog for an '02 Firebird lists GM Part # 12563281 but it's discontinued. What I've found is the balancer for the FWD L36, GM Part #12563267. Do these interchange? Figured I come here since the 3800 swap is so common in Fieros.