The finish seems good. Good thick flanges. I have a '97 Suburban 5.7 K1500 and they snapped into place with no modification (they slide in the top by themselves). The kit included cylinder block bolts, flange bolts and 1/2" gaskets for the spark plug harnesses (with new, longer bolts) and gaskets. The longest part of this project was the removal of the old canals. for money.
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