how to port swirl ports

my oil valley didnt look like that but the head casting says what i posted up top so... its not a roller cam

came out of a 87 pick up

as for flowing im just going to smooth some stuff out, such as the letters in the runner, and the gigantic push rod flow contrstrictor thinger dingers, and weld up the smog holes

ive heard to use 1.6 rockers on the intake only, leaving exhaust at 1.5.. beacuse on 308 heads the exhaust almost opens too soon which in long story short your fuel could be burned in the headers and nobody wants that. then i thought well thats the cam not the heads ha