Im installing new exhaust this week and while i'm at it, I would like to replace the nuts that secure the exhaust to the turbos. Does anyone know what their measurements are?

 

When you pull them out you can bring up to your local hardware store and they can tell you and get you the right stuff. Grade 8 stainless or hardened nuts/bolts are a good idea due to the high heat.

 

+1...I just went to a hardware store and matched them up there...I would stick to the grade mentioned above...I also replaced the studs as well...My buddy owns a machine shop and had him cut them to size for me...Ended up spending about $30-40 but it was well worth it...