I did not get the sound I thought I would out of a dog bowl. I 86d the body, gave the bowl to charity, and used the neck on another git. I had some good luck though with a 4 inch shower drain cover and a tin underneath. I thought maybe the dog bowl was just to thick and heavy. I am late in on this thread, but I say experiment. I may not have done something right, or something else. I have heard others not so happy with the bowl, and some have great luck with them. I am over resonators these days.
Those look nice.