I agree w/ oldblue65. Between salvage yard parts from later models, and kits of new parts, you can make your old truck better than a "new" one. The improvements you mentioned are literally all bolt-ons, with minimal fabrication, and have been done by lots of folks.
We're up to $.04!

If you can't fix it with a hammer and screwdriver, you need a bigger hammer.
1965 Chevy C10