So Id have to get a new steering column,engine,transmission?
You want three on the tree, seriously?
Chevy engine works with manual or auto. You’ll need to swap the automatic flexplate for a flywheel and clutch and add bushing in the crankshaft hub to pilot the trans input shaft.
Unless you are a diehard column shift guy I’d go with a floor shift linkage. And unless you’re a diehard 3 speed guy I’d put in a T-5 five speed from an S10 pickup or Camaro to get the overdrive ratio for highway cruising. Makes a nice package.