I wouldn't let anyone local touch a buick motor thats not a stock rebuild it requires custom clearances, special oiling system mods etc, rods are going to need made or you'll need to go through 100 stockers to get a perfect ones that can be cryoed or shot peened to hold up....
you take it wherever you want, but if I was going to build a big block buick again I wouldn't let anyone but jim touch it