318/360 swap questions

OK, I have a few questions maybe someone can help me out with. I am swapping a 318 LA built a couple years ago ,about 300 hp, with a XE268 comp cam and KB pistons for a rebuilt 360 magnum with a small voodoo torque cam. I want to install the motor with my new headers all at once. Would it be a good idea to use my 570 carb off the teener for the first start up since I know its a good tuned in carb so I don't burn the coating on the headers or are these two builds so different that the carb wouldn't be right for the magnum anyways?