Peter: Well, then it'll have to remain stuck (in the heater on) position. I am NOT taking the whole thing apart. Too much of a P.I.T.A..
The exhaust headers on the pass (rt?) side weren't too bad. You WILL need a 12mm combo wrench though. I needed a 13mm one to undo the tranny dipstick and move it a little out of the way to fit the wrench in and take the headers out.
However, I do NOT know how hard it will be if your pipes below arent cracked. Mine were, so I was able to pull them up and take the upper one apart, then remove the lower one with the pipe still on and cut the bolts. It will be a PITA too unless you let it soak in something (I used "Break-free CLP").

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Current:
2021 Charger Scat Pack Widebody "Sinabee"
2018 Durango R/T

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1972 280SE 4.5
2014 Jeep Grand Cherokee Limited "Hefe", 1992 Jeep Cherokee Laredo "Jeepy", 2006 Charger R/T "Hemi"
1999 Chrysler 300M - RIP @ 221k