I've decided not to rebuild this motor.It is a long block #k0491560.Which should have come out of 89 truck at a dealership in 1990. I just got this motor and pulled the heads to inspect & move around (too heavy). Motor turns over,no rust in bores. Evidence of some mice got into the water jacket area during storage.I'll explain why it was removed at dealer if anyone is interested-call. Must go need room! Will not ship. Pickup in West Milford NJ. $75 or make offer. Call 973-728-1005 Pete