Alright ...it is established they must be removed,....

Streets..there's NO way they would fit in an oven...they are huge.

They also seem to be welded to the exhaust pipe,...;.all the way to the muffler. (3" flowmasters)....

This definately seems like a job for a 'shop'.....I am not equipped to remove them....

Buying nice new ones,....might be an option...but I will have to investigate that,,,,,.......

Thanks guys,...

btw - The coating does seem like a good option,...especially if it reduces heat (anything that reduces heat I am a fan of)