Vvt lock or not

I am using using the heads. A long block is a block and heads, a short block is just the block no heads. From what I read, the spring number given is for the 6.4 cam. I need to know if the 6.4 cam that's non MDS will work in the 5.7 with the MDS deleted or if I have to use a cam that's for an MDS engine.