i paid 850 + shipping to get MY block sleeved from Golden Eagle. They sent My block back. No cores involved...... Talk to Robert at Golden Eagle. Didnt take that long either. The time that i was waiting for the block, it gave me time to reworked the head. But if you get it sleeved from them, send yuor pistons that you going to use so they can do the finishing hone to it. then its just install time from there!!!!!