Why do you need the EGT probe? is it because your is petrol??
just a tip, dont use double hex sockets to undo the factory dump pipe off the back of the turbo......they are hard to get too and you dont want to risj rounding off the nut....its in a terrible spot to have to replace if it happened.....
once loosened, a ratchet spanner will be your friend....I found out you'll be putting the hoist up and down heaps as you undo and the bolts and then tighten.
Just remember when you tighten up the dump pipe onto the turbo, to tighten the 3 bolts equally as much as possible.......
but Im sure you already know about all that
just in case someone else reading is interested.
its a nice exhaust!