Please describe the reasons why your 216 engine needs rebuilding.
Your truck appearance is first rate but curiosity leads to question the condition of your drivetrain.
What are your driving plans? Do you want an expressway cruiser, backroad runner or a show truck?
Hardcore truck owners would redo the 216. Same people frown on having furniture wood in the bed.
Some of us who want more "get-up-and-go" will do the 235 or better 261 (if one can be found).
The S10 route is radical. Like doing a V8. This is where you would post in the "HiPo Shop" section of Stovebolt.
We don't bite too badly but some of us have been known to do harsh rhetoric (sometimes more like old man ramble).
Discussion is cheap so use it to your advantage.
Lackland in 72.