You did not say which gas you were going to be using:
The burner is an impinging jet design. The natural gas burner has an orifice that is a #56 wire drill gage size. If it has one, the pilot jet has the same size orifice.
The propane burner of the same design has jets that are #75 wire drill gage size. The pilot jet is also the same size.
Hope this helps.
BTW - this is from measurements that I took from my burners way back in January of 2007. I had to dig up the info from when I had posted it in another forum.