What type of flange is this?

suprastanger507mgte

2x88+2x89+1x91+2x92=ME
Apr 5, 2005
3,148
6
38
Hayward , Ca
Please tell me what type of flange this is. Picture is attached.
Also, can anyone give me a quick rundown on how to tell what is T3 and what is T4?

Thanks guys.
Moe
 

Attachments

  • turbo flange.jpg
    turbo flange.jpg
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