CUSTOMER BOUGHT THE ENGINE WE TEST RAN IT DROVE IT AROUND THE YARD AT THE TIME RAN GREAT THEN CUSTOMER SAID INSTALLED IT CHANGED HIS STORY A FEW TIMES NOT SURE WHAT TO BELIVE THEY SAID IT SOMKED FROM HEAD GASGET SO WILL WILL SELL THIS AS CORE AND WILL TURN 360 SELL ASIS ONLY SELL AS PARTS OR CORE MAYBE OK MAYBE NOT GMC C6000 APPLICATION

8.2 NEED TO VERIFY IF CORRECT PART CASTING# 1987631