headers for gt40 heads

[BadA55f0Xxx]

i have gt40 heads that have been ported the previous owner had regular oval port flange on the headers but i need square port 1 5/8 or larger any suggestions? please get back at me thanks

 

[PrjctLxEnvy]

I think that means you have GT40P heads... I could be wrong though.. but if so then you have to get special headers

 

[BadA55f0Xxx]

there the aluminum cobra heads not the explorer heads

 

[Rooster]

Do they say gt40 or gt40p n the side?