66 273 to a 65 A833 and all into 67 dart?

That will work nicely. You will need 67-up motor mount brackets and K frame (or /6 to SB adapter motor mounts) , exhaust manifolds, clutch pedals, 67 floor hump, 67 up bell housing and clutch linkage. Now would be the time to upgrade to a 10.5 clutch. You will possibly need to modify and balance your drive shaft.