Which stroker kit for 470" b-engine

I am also waiting on the Trick Flow CNC Powerport 240 heads

Out of the box airflow results per Trick Flow:

Lift Intake Exhaust
.100" 78 58
.200" 154 130
.300" 230 186
.400" 282 222
.500" 310 243
.600" 326 253
.700" 334 262