Suitable for replacement antenna rod for Toyota Celica

I have a Ersatzrute for the Toyota Celica searched (original length of 75 cm, screw type). It should also be inexpensive. This here is the longest rod that I have found. She has a 6 mm thread, the original antenna base has 5 mm. I've filed by the rod thread to ~ 5 mm and a 5 mm-threaded draufgeschitten. It turned out that the material is cadmium-plated steel, brass not like the original. Therefore, a touch contact spray is needed before it is screwed, so it does not rust. Overall, I'm with the right solution zufieden, well priced. Limitations on the radio reception I can not determine.