It's a bolt up part that swaps right in. I run a pretty strong 7.5 in my Sixer still, but swapping to the 8.8 is a very common thing once you take steps to make power.
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~Matt
Race car: 2000 Roush #5004
Shark hauler: 2001 Explorer Sport 4.0L
Show car: 1970 Mach 1 351
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