The bulkheads didn't change so you can put 2.5 arms on it (with longer tie rods and steering linkage). The driveshafts should extend out enough so you could use the ones you have. The newest 3.3 has a different steering knuckle/driveshaft all together (bigger/better).
There is also a conversion kit available to put a bigger motor with a slide carb on it as well.