So I am looking into 408 Kits for the 6.0 I just bought...Looking at the lunati kit on TR, was wondering if anyone knew if the block would need to be notched for this crank? I am debating how much machine work needs to be done.

 

Most 4.0" strokers don't require notching the block,but you do need to check for clearance.It really depends on the design of the rods.Call the manufacturer they will tell you what you want to know.