I hope I’m not going to get Cirrus in trouble for posting this, if I am, sorry Cirrus. But in response to my e-mail about switching out that ludicrous EGT/CHT that comes standard for a JPI, a person we all know from the company said
"In the after market I think it wouldn’t be difficult to replace the egt/cht gauge since neither are “required” equipment under part 23. There may be some physical space issues and you’d need to screw around with what is where
but I’d guess it’s manageable."