Holley 1920 carburetor identification HELP!!

you're right, it is 4354, im thinking if buying the kit that was suggested above. i just want to be 100% sure its the right one. What do you guys think? Also the nitrofyl float, im assuming i should change that at the same time correct?
this is the kit im thinking of buying
http://www.carburetor-parts.com/Holley-1920-Carburetor-Repair-Kit-wFlat-Shaft_p_821.html