Dumb question re: Fox & Rocksucks springs

[Gazz]

I've got a Rocksucks Deluxe rear shock in mint condition and a Vanilla R kicking around that is the wrong size. However, the RS spring is too heavy, even for my fat ass. Anyone ever try a Fox spring on a RS rear shock?

Will it work, or are the spring rates and shock body diameter too different?

[Buzz]

The Deluxe and van. R springs you can swap around. The strenght (weight it takes to compress spring 1") and the stroke of the spring usually is printed on the springs