I have done too many to remember.
Just removed, repaired and reinstalled one for mplafleur.
Total time two hours, including drive time to and from my house.
Start soaking the bolts now, soak them every day for three days, it will help.

For those who want a new bracket, mounts and shields.

Fastlane: Mount Heat Shield, for buffer at air filter
http://catalog.peachparts.com/item.wws?sku=W0133-1640203

Fastlane: Air Cleaner Bracket, "T" shaped
http://catalog.peachparts.com/item.wws?sku=W0133-1624640

Fastlane: Air Cleaner Buffer. Round Shape. brand: MEISTERSATZ
http://catalog.peachparts.com/item.wws?sku=6179880111



Have a great day.

__________________
ASE Master Mechanic

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D

https://www.boldegoist.com/