My amp "sim" is based on a Peavey Pedal Steel Guitar Amp, such as the Nashville 400 or Nashville 112. The EQ in these amps includes a "Paramid" setup which is a parametric type with a frequency control and either cut or boost whatever frequency is selected. Generally 800Hz and some cut is what is used for Pedal Steel Guitars.
I haven't come up with a good speaker sim. I recently tried the Digitech "CabDryVr" unit and didn't find anything useful in it for Pedal Steel. I'm using an Eminence EPS-15C (15") speaker and a Carvin BX500 amp for live performances.