i’ll throw in a carb. i’m pretty sure i said at some point i would throw one in, just not the one that’s on the motor now. it more than $400 new. i have a carter 750(same as edelbrock) which was on the motor when it went 13.5 i have a holley 750 and i have one or two quadrajets. one is the same as what you have.
BTW you don’t need a carb, the one you have will work.