I had this on my pulling truck a couple years ago. Just had bill with mountain high performance go through it here in Arvada Colorado. Full port and polish, side draft intake from motorsports diesel, 110lbs springs, intake and exhaust valves are 2 mm larger than stock and the head is o-ringed not fire ringed. Cost $5000 when I had it done, asking $3800. If you have any questions please feel free to call or text me 303-598-4941, my name is Chris
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