Ok I was told when I bought my truck it had a 38r ball bearing turbo. It is loud, it whistles way more than other 7.3s around and when you kill the engine it even makes the spooling down sound of a ball earring turbo but I looked on the passenger side of the turbo and with a flashlight I entered the part number 702012-0010 and it says its a GTP38. I'm confused. Is there a way to tell???

Please help!!!!

 

Sounds like you were told the wrong thing... Is your truck straight piped?