After running this 250 engine for 10 years,I think it is time to rebuild her. I drive the truck as a daily driver,tow a light weight trailer.Three speed transmission,stock rear end,gear ratio unknown at this moment.

What are some improvements I can have done to the head for better fuel mileage?

What would be the best cam to use for towing and mileage?

Would flat top pistons be best for thiss type of rebuild?

If you have any more advice for this engine please post it

Thank You for Your help,Jimmy