what size carb

I know you didn't ask for this option, but, I'd go with a 4 barrel, preferably a 500-625 AFB, Carter or Edelbrock. To use a Holley 2 barrel, you're going to have to use an adapter as it won't fit your stock 2V intake anyway, so, if you're going to change intakes, you may as well go 4 barrel. You won't be disappointed!

I GAARRROONNNTTTEEEE!