Ya it is for bowtie or dart Heads intake port size is 1.340' X 2.210 Intake Height is 6.25' Power range is from 2000 to 7500 it also has a different design in witch the runners the left runner feed the right side and the right side feeds the left witch makes the runners a lot longer with out making the manifold not that much taller.
A lot of round track guy's around here use them. kinda of a neat intake
Hope this helps