They’re always going to be good enough out of the box. What’s more of a question is what your goal for your car is.
Baes on your post of just using this as a street car that will never be raced, unless you just have to have that extra power, there’s not a ton of reason to go further with those heads.
I went with as cast KRE’s and it was a great upgrade. I don’t regret it in the least. And if you’re ever left wanting, pull them off and send them out for porting.
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-Jason
1969 Pontiac Firebird
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