Flight Display System, avionics and flight director systems.

Hello,I am trying to outfit a King Air 1900D and maybe the 250 with a look a look version of the real world avionics that are use. I found a pay ware site called Reality xp and those where nice and lead me to this question.q. 1 In the FS world the reality xp gauges for fs9 namely the jet lines 2 are set up to be used in various T props. I am thinking that in the real world a beech's avionics will differ a bit from say a Cheyenne 400. I realize here we live in the sim world. So are the avionics mentioned here pretty much adapted to the different T props and (which again seem very nice) there are no real world looking avionics for the different T props made for that specific aircraft?I can see the simplicity and usefulness of the jet line product. I have tried some searches to find out the trend here in FS9 in relation to add on gauges fort for T props. Again the work from reality xp is great, and if this is the trend, to adapt a one size for all gauges and avionics to the t props than that