Almost any intake from weind or edelbrock will work.
Heck Even a nice painted up Cast iron 4 barrel Stocker and a Good Q jet will Work just fine.
Dont over carb the Engine To many Cfm,s 600 CFM Is lots for that engine Personally A good Running Quadrajet Is all you need and a Nice alumin Edelbrock performer intake A 600 holly Is also a nice carb for the unit.