You can get a corvette repop grill for around $390 from Chevs of the 40's. Or you can think outside the box and make your own grill for around $100. I do like the grill by the way. I just could not afford it at the time. Kitchen draw pulls off ebay:
Here is a pic of my friends 49 with 54 teeth, unfortunately he only go to mock it up and not actually do it because he sold it before he could actually do it.
That drawer pull grill is pretty creative- I mistook it for a '50 merc grill at first! Posted using the Full Custom H.A.M.B. App!
On a side note, '53 Chevy teeth will also work. (The vertical '49 lower bars are not removable, so I started with a '50 grille.)