hi.i used to run with a t3 turbo with internal wastegate on a hf manifold. now i changed my turbo and want to go with an external wastegate. now, is it possible to add a flange for an external westgate to the hf many? probably bore out the 02 sensor bung and insert a 90 degree pipe with a flange in it? id really appreciate your opinions.

 

yes you can.
if you do a search you can find several examples.
here is a current thread in fab: https://www.homemadeturbo.com/forum/...?topic=50432.0

 

thanks. answered all of my concerns.