I have afr 195's on my 383. I wouldn't even consider using a different head. Ive seen flow chart comparisons and the afr 195 flows better than most other bigger heads.
80 Malibu. 496 pump gas n/a. 10.73@124 and 6.77@101 so far.
87 Regal Limited. 27k mile survivor.
A stupid question is better than a stupid mistake!