Differences between a 65F1 and a 76 P trim exhaust housings

[49-blues]

Does anyone know the differences between these two exhaust housings? Pics would help.

 

[bison]

The contour is different. Having the housing and a turbine in hand will make identification easy and accurate. If the housing isnt stamped anywhere then it's guessing unless you have a turbine to try. I've seen housings contoured for turbines that didn't agree with the stamping also.