No
Yes
If it's a similar vintage, yes
Yes
sure, it should bolt right in.
Yes
No
Yes
A Cutlass door will not fit a 1986 Monte Carlo without modifications, as the two cars have different dimensions and design features. While they may share some components due to being part of the G-body platform, the specific door shapes, hinges, and mounting points differ. It's best to use a door specifically designed for the Monte Carlo to ensure proper fit and function.
Yes
Yes
No, and even if it did, the window design is a totally different shape
There is no such thing as a 2010 Monte Carlo, so the answer would be no