Holley 390 CFM 4 barrel on 250

[mwilliams5891]

so my monojet is shot and i want a better carb...so ive decided to get a holly 4 barrel that is 390 CFM and a new intake that is for a 4 barrel.

so my question is how much do i need to do to make it work? do i need to watch for anything?here is the link to the carb. please look and help

http://www.summitracing.com/parts/HLY-0-8007/

here is the intake.

http://www.summitracing.com/parts/OFY-5416/

thanks again everyone