Wawrzak

I am a new Rx7 owner and have started restoring it from the poor condition the previous owner kept it in. First thing I want to do is swap put the 13B engine and automatic tranny and put in a 20B engine and manual transmission. I unfortunately do not have the necessary knowledge to do it myslef so I was wandering if anyone knew of any place in virginia that might do this engine and tranny swap and what I would also need to buy to complete this. Any and all advice is really appreciated.