Project Eugene: 1949 5 window

[HULK64]

Thanks guys- I appreciate the welcome. I have read Skymangs thread at least 300 times already, but it was good to read it again! Haha.
I am planning on using EZ Swaps stock body height kit, since he told me that his kit puts the running boards and bottoms of the fenders level with the bottom of the frame rail. So, my assumption is that I dont want to do a body drop since I want it to lay frame. He also accommodates for the LS motor with his engine mounts. Anything else I need to know about this kit?
Why do you recommend starting with the frame? Since I am using the kit dont I want the stock holes to line up?