Blown Mercruiser 5.0 Alpha. Low hours. Replacement options

[keith]

Thanks for all of the great advice everyone.

I decided to have them pull the heads and take a look myself at the situation. If the cylinders look good I will go ahead with machining the heads and valve job and see what happens. If the cylinders look good I will have them change the manifolds too. I would rather have a new fuel injected engine in there. Hopefully I can delay that expense for a few years.
They are pulling the heads on Friday.