Thanks Kevin. My manifold had warped and broken a stud with the stock exhaust. Hopefully the 3 inch will keep it cool. Might set the alarm to 650 or 700 degrees C as it sounds more realistic than the 600. I have a larger intercooler with a 10 inch fan so I am confident that its getting air through there.

You won't need to worry about that anymore with the big V8 under the hood. Petrol as well so no EGT issues. Mmm...maybe I need to rethink a few things.