Advice about a 360.

I know where I can get a 360 with a 727 out of an 89 van. I know that the 727 is worth it, I have been planning on getting one for my 318 anyway. I am hoping that since it was in a van it will have all the heavy duty gears in it. Is the 360 worth it? It was running but it has been sitting. It looks like it came with a factory four bbl. My plan if it was worth it was to rebuild the 360 from the ground up, the right way. I have heard about swapping out 340/360/and 318 parts. Usually putting a 340 cam into a 318. Any other ideas.