Well when I went and bought the block I verified with them that it would be a running block and they said yes or else I wouldnt have bought it. Now when I went back to get a refund they said "we only guaranteed it rebuildable" so I had to pitch a fit and get the manager involved and they finally gave me like 50 bucks back so I guess 50 bucks payed for a good rebuildable block isnt that bad. I just wish I had the money to put towards my new motor. The money refunded though provided my down payment on that new motor however so I guess thats good. Watch out if your looking for an actual running block cause I guess alot of places actually only guarantee blocks "rebuildable."