Get a spreader or make your own , It will make the job a lot easier and the correct way of doing it .(my opinion) I've done the both ways and the spreader is less hassel. Do you need it NO , but !

E. Williams 65 Coronet 500 3400lbs w/d, 446, Indy EZ'S, A&A transbrake,Comp 650 lift cam, 6.50 @ 105 mph 1/8th 10.25 @ 130mph 1/4