one of 101 said:
Just by a coulpe of front side markers - thet fit the rear too
You are right and wrong. Yes, the will fit in the location because they are same size and dimensions. HOWEVER, the connectors coming off the back of them are different. The front(amber) has a straight small connector while the rear(red) has a 90 degree bend with a larger connector on it.
So if you want to modify either the lamp or the wiring harness on the car you manage to get them to work but from the factory it isn't an direct swap.