Pretty sure lots of have made similar mistake or worse lol.
When I first started getting into mod engines in the late 90’s I sure as hell made enough lol.
Typical mounting location is 4”-6” from piston skirt. Single pipe is typically mounted at 4” and twin/triple pipes at 6”. Depending on type of engine, mods etc will determine egt numbers. EGT’s are a great aid in tuning but should only be used as that and not the sole tuning object. Piston wash...
Chris Bondi and Bill Cudney both do it. It’s done in the ecm flash. I had Bondi do a few for me over the years now.
http://www.cudneyracing.com/REV_XS_XR_1200.html
Clutching is the best kept secret. Only a dumbass would give that info up. Ok to help folks and to lead them towards the right direction but to simply tell someone what to put in? Screw that.