Yes.
Yes
no
No
No. But 1969 thru 1972 Chevrolet truck grille assembly will interchange.
Most likely no. It depends upon what "style of Blazer" and what year you are talking about, and what motor your Corsica had.
yes
yes it will because i did it to my truck and my truck, is a 1994
Well, honey, technically speaking, a 2-door Blazer door will fit an S10 truck because they are essentially the same vehicle underneath all that fancy branding. However, you might need to do some tinkering and adjustments to make sure it fits like a glove. So, go ahead and give it a whirl, just be prepared to get your hands dirty.
Yes it will.
yes
It would depend on what year full size Chevys you are working with.