Flathead question

[bart78]

I picked up a flathead from an old guy that got it 40 years ago to put in a truck but never did I tore it down and there is some rust in a few cylinders. My question is there seems to be no cracks that I can see and all the rest looks new. It was stored in a chicken barn with no plugs and the intake open. If I want to stay prety much stock can I just have it bored out. I would have them magma flux it first.