Re: Whats the correct CASTING number??
typically the odd numbered casting numbers are for the left side and even numbered casting numbers are for the right side.
as for corvette vs truck, I would say that high performance corvette equal heavy duty truck.
and the 2.5 inch diameter exhuaste manifolds were for the FI engines
but never say never and if those casting numbers are for corvette they are most likely pretty valuable if not very valueable.
as for the 2.0 " vs. the 2.5" debate it depends on where the peak of your power curve comes in . peak torque may come in sooner and you may not need or even want the 2.5 inch manifolds.
tough call but it may save you a search , hope it helps
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