intake manifold p30

[thomas14]

I am thinking to replace my stock throttle body with an itr and i would like to know the inlet diameter of p30 manifold (stock b16a2 manifold).. i know that itr/ctr inlet manifold diameter its 62mm.. how about the p30 manifold?? 60mm or 62mm?
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Ebony Cam

 

[pateras_vtec]

p30 is an obd1 ecu. 16A inlet mani is 60mm. worth the while if running itr/ctr cams and can`t afford a good aftermarket one.