I used my truck as a truck for many years, hauled firewood and whatever I needed to haul and kept making improvements along the way like taller gears etc etc. Finally blew it all apart, started over. I learned this truck was a cluster, a mix of tin from everywhere, 41 fenders on one side 46 on the other and so on. Purchased a 261, several trans replacements, now a T-5, found a factory sway bar etc etc, modern seat, rebuild ALL suspension, radial tires, was not difficult finding parts back then unlike today.
The 3600 (my $300 truck) was another story. Kept the patina look but replaced most all the running gear. I get keeping the look but you have to make it safe.