Thanks. I also don't know of any damage that may have occurred, but the parts are more than likely there for a pretty good reason. I suspect that water has been getting into areas that it aught not!
One signficant upgrade by doing this, at least for me, has been the great reduction in that ever-present "burning" smell from the blower. The cowl/cover in my case, and in yours, was baked to oblivion, and was probably a good suspect in this odor problem, since that particular part is up against the air piping to the cabin. I don't burn oil or any other fluid, but the smell had persisted, and I think I've found the main culprit in this.
'07 335xi 6-spd 4dr, Montego blue
'98 540i 6-spd Sport, Jet Black II
'92 325i 5-spd 4dr, burgundy