New here and looking for advice with my setup.

I know what I would do but maybe your not me. Not a real big fan of headers on a street car. If they are fenderwell headers they would come off and the aprons would be repaired as they are structural. As far as upgrades I would go with eletronic ignition, a 71 intake manifold with the smaller themoquad and a cam along the lines of the original street hemi grind which will work with stock springs. I would also upgrade it to front disc brakes if it didn’t already have them. I would also go with US Cartool stiffening braces.