1970 Duster

I bought this car and have been putting it back together piece buy piece and it is my first Duster (Mopar) and my question is are these motor mount adapter for 6 cylinder to small block V8? if so do I use the stock motor mount with them and if so won't that raise my engine up in the engine bay? will that cause me any problems with tranny install and stock shift linkage? also if they go onto stock motor mounts, should I put them on engine first? and a few more question for now is it easyer to pull K frame to install motor or just drop motor in from top and should I put tranny on first? I will more than likely be doing this by my self!

DSC00090.JPG