How long does it take to have a long block built for you??

JTL in keyport new jersey is building me my long block. I brought him my 360 block a month ago. He is going to tear it apart check everything out and polish some stuff up. Freshen up what needs to be and then put in my new cam, RHS magnum heads, and so on. My question is how long does it take?? It has been a month and I can't wait to get it back and put it in my duster already!!