I live in atlanta, ga and just bought my first IH. It is a 1967 1200 pickup that appears to be original less a few parts that wear out on a 50 year old truck. The patina on the truck is amazing and it runs and stops but it is rough. Do I keep original or modernize? If I modernize any ideas on simple brake, gearing, possible motor options to make a truck that is more manageable around town? Thanks