I don't know about psychotherapy, Bob, but I think my Evo is the only thing keeping me sane!
These are the plugs I used on the exhaust. There are cheaper ones available from China but you could always make a cheeky offer on these.
https://www.ebay.co.uk/itm/Stainless...t/113860394419
To protect the electrical connections, I used these:
http://www.ukmonster.co.uk/monster/s...08&postcount=5