can install s60v2 firmwire in s60v3

i need to install v2 os in v3.like n70 os in n82.
Any hardware problems

Or ineed to run v2 apps in v3
only exe.i dont need aif,mif,rsc i need to work only .exe files.

Is it possible

There is no such thing. Firmwares are bound to the given phone model.