Need a new carb for my 84 K30 454.

[rs74]

The choke doesn't work on the factory quadrajet. I am thinking about taking the edelbrock carb off my 350 and trying to put it on the 454. The 350 has an edelbrock performer intake and the 454 has the factory intake. The 454 still has all the factory stuff on it. Do I need an adapter to put the aftermarket carb on the 454 factory intake? I really don't want to put an aftermarket intake on it at this time. I just need it to start in this cold weather and the q-jet isn't doing that right now. I am not sure if they are square or spread bore as far as the carbs and intakes since they are all still bolted down.