the lepou le456 is a FREE guitar amp sim VST plugin - so it's NOT a crack. if you want to use it in pro tools, you'll need to wrap it with a vst to rtas adapter like the one from fxpansion.
at this point, i wouldn't waste your money on the fxpansion adapter just for this if you haven't bought it yet as lepou still needs to make some adjustments in the code for the plugin to work in pro tools.
since this is in the rap/hip hop section, i'm assuming you want to throw some dirt on your tracks? there are other options out there that will work fine for that.
if you're looking to lay down guitar, i'm sure you already know the le456 is one of the best plugins out there. just like me, you have to be patient and wait for lepou to deliver the goods - it will be well worth the wait...