Sorry to ask a dumb question, but what did the std manifold come on? year, make, model?

 

https://www.homemadeturbo.com/tech_p...old/index.html

this link might help ya out...

 

thanx, that helped me out.

 

for some reason, niether of my civic standards(a 90 and a 91) have had that manifold, and niether has anyother one i have seen(all 91's).......could this be a issue of which year they are or where in the country they are sold?

 

Yup, the Candian versions had them those years I think...