I used Heddman Hedders here and installed them with no trouble at all either. I made sure to use Stage 8 bolts from Summit to lock them in. Some people don't have header leaks but I did with the aluminum heads and these bolts stopped the leaks fast.
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1979 Chevrolet Bonanza Big10 "Tootsie Roll"
1985 Chevrolet Silverado (wife's)
Member of the Southern Bowties Club
"Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson
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