I have a 95 F3 and i just trashed the tranny
I have an F2 motor sitting in the garage
can i just pull the tranny from that and bolt it into the F3?

 

You would need to pull both engines apart to swap the trannys as they are internal and 1 piece with the motor. What exactly went wrong with your transmission? Replacing the gears in there really isn't that hard or expensive to do. I would suggest buying a Haynes manual before attempting it though.