How will this carb work?

I've got a 13:1 domed piston 446 with stock Edelbrock heads, a roller cam .630-.630 with 268 & 278 at .050, Mopar M1 single plane intake, going into a 70 Dart with 4:56 and 29" tires for drag racing only. I'm out of money cause I just bought a new Harley and I only have an 800 DP thats been worked on a little bit. I'm stuck with the old convertor also - 3000 stall with the mild 383 that was in there before. What do I need?