Maybe........maybe not. Unless the torsion bars are the heavier duty version (you'll need to get the numbers off the end of the bars), there really isn't anything on the '67 that would be an "upgrade" for the front end. Maybe the rear springs if they've got more leaves than yours. Now, braking, rear end, transmission, and driveshaft might be possible upgrades depending on what you have now and what the donor car(s) have.