Isn't the balancer on the car now a 288 5 main balancer? If neither works of course i'll turn to your spare parts cache first to purchase one. I'm a week from getting the 327 on the stand and longer before swapping motors because i'm working on a Pontiac 428 for the tempest at the same time. Thankfully the shop is heated, i have too much to do to wait for spring to come so i can get started!