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IF your not looking at tons more performance (ie staying with the stock LTR setup and a mild cam) then stick with the original heads, assuming that they don't cost more to fix than a new set would cost. Just get a three angle valve job and pocket porting and be done with it.
If you want more performance and are planning to upgrade to a larger cam and full exhaust and higher flowing intake components then spend a little more money now as opposed to pulling them off again to get it done later.
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.